I was updating my media wiki, so dragged the images folder from the website to my desktop to copy it and back it up, the error occurred 83% of the way through the transfer.

WinSCP 5.21.7

Error message:
Invalid access to memory.

Stack trace:
(002B3D1B) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(004712E4) Customdriveview::TCustomDriveView::IterateSubTree
(00483C5A) Driveview::TDriveView::ValidateDirectoryEx
(00470F75) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F47) Vcl::Extctrls::TTimer::Timer
(003C9C40) System::Classes::_18201
(000400E9) USER32.dll
(000370A5) USER32.dll
(00034E15) USER32.dll
(00034BDB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.7

Error message:
Invalid access to memory.

Stack trace:
(002B3D1B) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(004712E4) Customdriveview::TCustomDriveView::IterateSubTree
(00483C5A) Driveview::TDriveView::ValidateDirectoryEx
(00470F75) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F47) Vcl::Extctrls::TTimer::Timer
(003C9C40) System::Classes::_18201
(000400E9) USER32.dll
(000370A5) USER32.dll
(00034E15) USER32.dll
(00034BDB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.7

Error message:
Invalid access to memory.

Stack trace:
(002B3D1B) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(004712E4) Customdriveview::TCustomDriveView::IterateSubTree
(00483C5A) Driveview::TDriveView::ValidateDirectoryEx
(00470F75) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F47) Vcl::Extctrls::TTimer::Timer
(003C9C40) System::Classes::_18201
(00040239) USER32.dll
(000371F5) USER32.dll
(00034F65) USER32.dll
(00034D2B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

I logged back on to my workstation and the message was waiting for me.

WinSCP 5.21.7

Error message:
Invalid access to memory.

Stack trace:
(002B3D1B) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(004712E4) Customdriveview::TCustomDriveView::IterateSubTree
(00483C5A) Driveview::TDriveView::ValidateDirectoryEx
(00470F75) Customdriveview::TCustomDriveView::ValidateDirectory
(004817F5) Driveview::TDriveView::Change
(002B8552) Vcl::Comctrls::TCustomTreeView::CNNotify
(00470A8D) Customdriveview::TCustomDriveView::CNNotify
(002824BD) Vcl::Controls::TWinControl::WndProc
(002B880E) Vcl::Comctrls::TCustomTreeView::WndProc
(00282623) Vcl::Controls::_17076
(002824BD) Vcl::Controls::TWinControl::WndProc
(00281B04) Vcl::Controls::TWinControl::MainWndProc
(003C9C40) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(00037045) USER32.dll
(0003AC0D) USER32.dll
(00073FBB) ntdll.dll.KiUserCallbackDispatcher
(00034E6A) USER32.dll.SendMessageW
(00068881) COMCTL32.DLL
(00028892) COMCTL32.DLL
(00028767) COMCTL32.DLL
(0003EC58) COMCTL32.DLL
(00040489) USER32.dll
(00037445) USER32.dll
(00036B22) USER32.dll
(00034CC6) USER32.dll.CallWindowProcW
(002825CE) Vcl::Controls::TWinControl::DefaultHandler
(002824BD) Vcl::Controls::TWinControl::WndProc
(002B880E) Vcl::Comctrls::TCustomTreeView::WndProc
(003C9C40) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(00037045) USER32.dll
(0003AC0D) USER32.dll
(00073FBB) ntdll.dll.KiUserCallbackDispatcher
(00034E6A) USER32.dll.SendMessageW
(00387117) Winapi::Commctrl::TreeView_SelectItem
(0046F9ED) Customdriveview::TCustomDriveView::CreateWnd
(0028154E) Vcl::Controls::TWinControl::CreateHandle
(0027D979) Vcl::Controls::TControl::WndProc
(002824BD) Vcl::Controls::TWinControl::WndProc
(002B880E) Vcl::Comctrls::TCustomTreeView::WndProc
(0028170E) Vcl::Controls::TWinControl::RecreateWnd
(002824BD) Vcl::Controls::TWinControl::WndProc

The problem happens rarely. I cannot reproduce it.

Machine locked up for about 15 minutes.

WinSCP 5.21.7

Error message:
Invalid access to memory.

Stack trace:
(002B3D1B) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(004712E4) Customdriveview::TCustomDriveView::IterateSubTree
(00483C5A) Driveview::TDriveView::ValidateDirectoryEx
(00470F75) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F47) Vcl::Extctrls::TTimer::Timer
(003C9C40) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(000351B5) USER32.dll
(00034F7B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.6

Error message:
Invalid access to memory.

Stack trace:
(002B3CEF) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(004712B8) Customdriveview::TCustomDriveView::IterateSubTree
(00483C2E) Driveview::TDriveView::ValidateDirectoryEx
(00470F49) Customdriveview::TCustomDriveView::ValidateDirectory
(004817C9) Driveview::TDriveView::Change
(002B8526) Vcl::Comctrls::TCustomTreeView::CNNotify
(00470A61) Customdriveview::TCustomDriveView::CNNotify
(00282491) Vcl::Controls::TWinControl::WndProc
(002B87E2) Vcl::Comctrls::TCustomTreeView::WndProc
(002825F7) Vcl::Controls::_17076
(00282491) Vcl::Controls::TWinControl::WndProc
(00281AD8) Vcl::Controls::TWinControl::MainWndProc
(003C9C14) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(00037045) USER32.dll
(0003AC0D) USER32.dll
(00073FBB) ntdll.dll.KiUserCallbackDispatcher
(00034E6A) USER32.dll.SendMessageW
(00068881) COMCTL32.DLL
(00028892) COMCTL32.DLL
(00028767) COMCTL32.DLL
(0003EC58) COMCTL32.DLL
(00040489) USER32.dll
(00037445) USER32.dll
(00036B22) USER32.dll
(00034CC6) USER32.dll.CallWindowProcW
(002825A2) Vcl::Controls::TWinControl::DefaultHandler
(00282491) Vcl::Controls::TWinControl::WndProc
(002B87E2) Vcl::Comctrls::TCustomTreeView::WndProc
(003C9C14) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(00037045) USER32.dll
(0003AC0D) USER32.dll
(00073FBB) ntdll.dll.KiUserCallbackDispatcher
(00034E6A) USER32.dll.SendMessageW
(003870EB) Winapi::Commctrl::TreeView_SelectItem
(0046F9C1) Customdriveview::TCustomDriveView::CreateWnd
(00281522) Vcl::Controls::TWinControl::CreateHandle
(0027D94D) Vcl::Controls::TControl::WndProc
(00282491) Vcl::Controls::TWinControl::WndProc
(002B87E2) Vcl::Comctrls::TCustomTreeView::WndProc
(002816E2) Vcl::Controls::TWinControl::RecreateWnd
(00282491) Vcl::Controls::TWinControl::WndProc

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.7

Error message:
Invalid access to memory.

Stack trace:
(002B3D1B) Vcl::Comctrls::TTreeNode::GetTreeView
(00097C6F) ntdll.dll
(00077BA1) ntdll.dll.KiUserExceptionDispatcher
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(004712E4) Customdriveview::TCustomDriveView::IterateSubTree
(00483C5A) Driveview::TDriveView::ValidateDirectoryEx
(00470F75) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F47) Vcl::Extctrls::TTimer::Timer
(003C9C40) System::Classes::_18201
(000313E1) USER32.dll
(00022171) USER32.dll
(00020A20) USER32.dll
(0002056B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.6

Error message:
Accesso alla memoria non valido.

Stack trace:
(002B3CEF) Vcl::Comctrls::TTreeNode::GetTreeView
(00097C6F) ntdll.dll
(00077BA1) ntdll.dll.KiUserExceptionDispatcher
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(004712B8) Customdriveview::TCustomDriveView::IterateSubTree
(00483C2E) Driveview::TDriveView::ValidateDirectoryEx
(00470F49) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F1B) Vcl::Extctrls::TTimer::Timer
(003C9C14) System::Classes::_18201
(000313E1) USER32.dll
(00022171) USER32.dll
(00020A20) USER32.dll
(0002056B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

I've kept WinSCP opened over night, while my Win 11 Pro notebook was in hybernation mode. While bringing WinSCP to the front back again in the morning, it has already shown this stack trace.

WinSCP 5.21.6

Error message:
Unzulässiger Zugriff auf einen Speicherbereich.

Stapelverfolgung:
(002B3CEF) Vcl::Comctrls::TTreeNode::GetTreeView
(00097C6F) ntdll.dll
(00077BA1) ntdll.dll.KiUserExceptionDispatcher
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(004712B8) Customdriveview::TCustomDriveView::IterateSubTree
(00483C2E) Driveview::TDriveView::ValidateDirectoryEx
(00470F49) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F1B) Vcl::Extctrls::TTimer::Timer
(003C9C14) System::Classes::_18201
(000313E1) USER32.dll
(00022171) USER32.dll
(00020A20) USER32.dll
(0002056B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.7

Error message:
メモリのアクセス違反

スタック トレース:
(002B3D1B) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(004712E4) Customdriveview::TCustomDriveView::IterateSubTree
(00483C5A) Driveview::TDriveView::ValidateDirectoryEx
(00470F75) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F47) Vcl::Extctrls::TTimer::Timer
(003C9C40) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(000351B5) USER32.dll
(00034F7B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.6

Error message:
Invalid access to memory.

Stack trace:
(002B3CEF) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(004712B8) Customdriveview::TCustomDriveView::IterateSubTree
(00483C2E) Driveview::TDriveView::ValidateDirectoryEx
(00470F49) Customdriveview::TCustomDriveView::ValidateDirectory
(004817C9) Driveview::TDriveView::Change
(002B8526) Vcl::Comctrls::TCustomTreeView::CNNotify
(00470A61) Customdriveview::TCustomDriveView::CNNotify
(00282491) Vcl::Controls::TWinControl::WndProc
(002B87E2) Vcl::Comctrls::TCustomTreeView::WndProc
(002825F7) Vcl::Controls::_17076
(00282491) Vcl::Controls::TWinControl::WndProc
(00281AD8) Vcl::Controls::TWinControl::MainWndProc
(003C9C14) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(00037045) USER32.dll
(0003AC0D) USER32.dll
(00073FBB) ntdll.dll.KiUserCallbackDispatcher
(00034E6A) USER32.dll.SendMessageW
(00068881) COMCTL32.DLL
(00028892) COMCTL32.DLL
(00028767) COMCTL32.DLL
(0003EC58) COMCTL32.DLL
(00040489) USER32.dll
(00037445) USER32.dll
(00036B22) USER32.dll
(00034CC6) USER32.dll.CallWindowProcW
(002825A2) Vcl::Controls::TWinControl::DefaultHandler
(00282491) Vcl::Controls::TWinControl::WndProc
(002B87E2) Vcl::Comctrls::TCustomTreeView::WndProc
(003C9C14) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(00037045) USER32.dll
(0003AC0D) USER32.dll
(00073FBB) ntdll.dll.KiUserCallbackDispatcher
(00034E6A) USER32.dll.SendMessageW
(003870EB) Winapi::Commctrl::TreeView_SelectItem
(0046F9C1) Customdriveview::TCustomDriveView::CreateWnd
(00281522) Vcl::Controls::TWinControl::CreateHandle
(0027D94D) Vcl::Controls::TControl::WndProc
(00282491) Vcl::Controls::TWinControl::WndProc
(002B87E2) Vcl::Comctrls::TCustomTreeView::WndProc
(002816E2) Vcl::Controls::TWinControl::RecreateWnd
(00282491) Vcl::Controls::TWinControl::WndProc

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.7

Error message:
Invalid access to memory.

Stack trace:
(002B3D1B) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(004712E4) Customdriveview::TCustomDriveView::IterateSubTree
(00483C5A) Driveview::TDriveView::ValidateDirectoryEx
(00470F75) Customdriveview::TCustomDriveView::ValidateDirectory
(004817F5) Driveview::TDriveView::Change
(002B8552) Vcl::Comctrls::TCustomTreeView::CNNotify
(00470A8D) Customdriveview::TCustomDriveView::CNNotify
(002824BD) Vcl::Controls::TWinControl::WndProc
(002B880E) Vcl::Comctrls::TCustomTreeView::WndProc
(00282623) Vcl::Controls::_17076
(002824BD) Vcl::Controls::TWinControl::WndProc
(00281B04) Vcl::Controls::TWinControl::MainWndProc
(003C9C40) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(00037045) USER32.dll
(0003AC0D) USER32.dll
(00073FBB) ntdll.dll.KiUserCallbackDispatcher
(00034E6A) USER32.dll.SendMessageW
(00068881) COMCTL32.DLL
(00028892) COMCTL32.DLL
(00028767) COMCTL32.DLL
(0003EC58) COMCTL32.DLL
(00040489) USER32.dll
(00037445) USER32.dll
(00036B22) USER32.dll
(00034CC6) USER32.dll.CallWindowProcW
(002825CE) Vcl::Controls::TWinControl::DefaultHandler
(002824BD) Vcl::Controls::TWinControl::WndProc
(002B880E) Vcl::Comctrls::TCustomTreeView::WndProc
(003C9C40) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(00037045) USER32.dll
(0003AC0D) USER32.dll
(00073FBB) ntdll.dll.KiUserCallbackDispatcher
(00034E6A) USER32.dll.SendMessageW
(00387117) Winapi::Commctrl::TreeView_SelectItem
(0046F9ED) Customdriveview::TCustomDriveView::CreateWnd
(0028154E) Vcl::Controls::TWinControl::CreateHandle
(0027D979) Vcl::Controls::TControl::WndProc
(002824BD) Vcl::Controls::TWinControl::WndProc
(002B880E) Vcl::Comctrls::TCustomTreeView::WndProc
(0028170E) Vcl::Controls::TWinControl::RecreateWnd
(002824BD) Vcl::Controls::TWinControl::WndProc

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.6

Error message:
Invalid access to memory.

Stack trace:
(002B3CEF) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(004712B8) Customdriveview::TCustomDriveView::IterateSubTree
(00483C2E) Driveview::TDriveView::ValidateDirectoryEx
(00470F49) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F1B) Vcl::Extctrls::TTimer::Timer
(003C9C14) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(000351B5) USER32.dll
(00034F7B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
I remote into a local machine and start moving files from a server to an external hard drive. I then close the RDP session and let it run. The session stays running in the background with WinSCP left open. The error was there when I opened the RDP session this morning.

WinSCP 5.21.6

Error message:
Invalid access to memory.

Stack trace:
(002B3CEF) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(004712B8) Customdriveview::TCustomDriveView::IterateSubTree
(00483C2E) Driveview::TDriveView::ValidateDirectoryEx
(00470F49) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F1B) Vcl::Extctrls::TTimer::Timer
(003C9C14) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(000351B5) USER32.dll
(00034F7B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.19.6

Error message:
Invalid access to memory.

Stack trace:
(002B1C3F)
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(0046ECB0)
(0048120E)
(0046E941)
(0047EEB9)
(002B6476)
(0046E459)
(002803E1)
(002B6732)
(00280547)
(002803E1)
(0027FA28)
(003C7B64)
(00040489) USER32.dll
(00037445) USER32.dll
(00037045) USER32.dll
(0003AC0D) USER32.dll
(00073FBB) ntdll.dll.KiUserCallbackDispatcher
(00034E6A) USER32.dll.SendMessageW
(00068881) COMCTL32.DLL
(00028892) COMCTL32.DLL
(00028767) COMCTL32.DLL
(0003EC58) COMCTL32.DLL
(00040489) USER32.dll
(00037445) USER32.dll
(00036B22) USER32.dll
(00034CC6) USER32.dll.CallWindowProcW
(002804F2)
(002803E1)
(002B6732)
(003C7B64)
(00040489) USER32.dll
(00037445) USER32.dll
(00037045) USER32.dll
(0003AC0D) USER32.dll
(00073FBB) ntdll.dll.KiUserCallbackDispatcher
(00034E6A) USER32.dll.SendMessageW
(0038503B)
(0046D3B9)
(0027F472)
(0027B89D)
(002803E1)
(002B6732)
(0027F632)
(002803E1)

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.5

Error message:
Invalid access to memory.

Stack trace:
(002B3CE7) Vcl::Comctrls::TTreeNode::GetTreeView
(000879EF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(00471221) Customdriveview::_16446
(00471221) Customdriveview::_16446
(004712B0) Customdriveview::TCustomDriveView::IterateSubTree
(00483C26) Driveview::TDriveView::ValidateDirectoryEx
(00470F41) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F13) Vcl::Extctrls::TTimer::Timer
(003C9C0C) System::Classes::_18201
(00040109) USER32.dll
(000370C5) USER32.dll
(00034E35) USER32.dll
(00034BFB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.6

Error message:
Ошибка доступа к памяти.

Трассировка стека:
(002B3CEF) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(004712B8) Customdriveview::TCustomDriveView::IterateSubTree
(00483C2E) Driveview::TDriveView::ValidateDirectoryEx
(00470F49) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F1B) Vcl::Extctrls::TTimer::Timer
(003C9C14) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(000351B5) USER32.dll
(00034F7B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.6

Error message:
Invalid access to memory.

Stack trace:
(002B3CEF) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(004712B8) Customdriveview::TCustomDriveView::IterateSubTree
(00483C2E) Driveview::TDriveView::ValidateDirectoryEx
(00470F49) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F1B) Vcl::Extctrls::TTimer::Timer
(003C9C14) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(000351B5) USER32.dll
(00034F7B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

@evgeny.kovalev: Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.7

Error message:
Ошибка доступа к памяти.

Трассировка стека:
(002B3D1B) Vcl::Comctrls::TTreeNode::GetTreeView
(0008788F) ntdll.dll
(00073EC1) ntdll.dll.KiUserExceptionDispatcher
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(004712E4) Customdriveview::TCustomDriveView::IterateSubTree
(00483C5A) Driveview::TDriveView::ValidateDirectoryEx
(00470F75) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F47) Vcl::Extctrls::TTimer::Timer
(003C9C40) System::Classes::_18201
(0003FE89) USER32.dll
(00036E45) USER32.dll
(00034BB5) USER32.dll
(0003497B) USER32.dll.DispatchMessageW

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
I just opened up winscp right after updating it.
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.7

Error message:
Invalid access to memory.

Stack trace:
(002B3D1B) Vcl::Comctrls::TTreeNode::GetTreeView
(00097C6F) ntdll.dll
(00077BA1) ntdll.dll.KiUserExceptionDispatcher
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(00471255) Customdriveview::_16446
(004712E4) Customdriveview::TCustomDriveView::IterateSubTree
(00483C5A) Driveview::TDriveView::ValidateDirectoryEx
(00470F75) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F47) Vcl::Extctrls::TTimer::Timer
(003C9C40) System::Classes::_18201
(00031331) USER32.dll
(000220E1) USER32.dll
(000209A0) USER32.dll
(000204EB) USER32.dll.DispatchMessageW

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.5

Error message:
Nieprawidłowy dostęp do pamięci.

Stack trace:
(002B3CE7) Vcl::Comctrls::TTreeNode::GetTreeView
(0008607F) ntdll.dll
(00072AC1) ntdll.dll.KiUserExceptionDispatcher
(00471221) Customdriveview::_16446
(00471221) Customdriveview::_16446
(004712B0) Customdriveview::TCustomDriveView::IterateSubTree
(00483C26) Driveview::TDriveView::ValidateDirectoryEx
(00470F41) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F13) Vcl::Extctrls::TTimer::Timer
(003C9C0C) System::Classes::_18201
(00044E99) USER32.dll
(00035977) USER32.dll
(00034AB6) USER32.dll
(0003488B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.19.6

Error message:
Unzulässiger Zugriff auf einen Speicherbereich.

Stapelverfolgung:
(002B1C3F) Vcl::Comctrls::TTreeNode::GetTreeView
(00097C6F) ntdll.dll
(00077BA1) ntdll.dll.KiUserExceptionDispatcher
(0046EC21) Customdriveview::_16446
(0046EC21) Customdriveview::_16446
(0046EC21) Customdriveview::_16446
(0046ECB0) Customdriveview::TCustomDriveView::IterateSubTree
(0048120E) Driveview::TDriveView::ValidateDirectoryEx
(0046E941) Customdriveview::TCustomDriveView::ValidateDirectory
(00256E6B) Vcl::Extctrls::TTimer::Timer
(003C7B64) System::Classes::_18201
(00031331) USER32.dll
(000220E1) USER32.dll
(000209A0) USER32.dll
(000204EB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.6

Error message:
Acceso a memoria no válido

Traza de la pila:
(002B3CEF) Vcl::Comctrls::TTreeNode::GetTreeView
(00088F2F) ntdll.dll
(000743C1) ntdll.dll.KiUserExceptionDispatcher
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(004712B8) Customdriveview::TCustomDriveView::IterateSubTree
(00483C2E) Driveview::TDriveView::ValidateDirectoryEx
(00470F49) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F1B) Vcl::Extctrls::TTimer::Timer
(003C9C14) System::Classes::_18201
(000437A9) USER32.dll
(000242A7) USER32.dll
(000233F9) USER32.dll
(000231DB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.5

Error message:
Ogiltig åtkomst till minnet.

Stackspår:
(002B3CE7) Vcl::Comctrls::TTreeNode::GetTreeView
(00097C6F) ntdll.dll
(00077BA1) ntdll.dll.KiUserExceptionDispatcher
(00471221) Customdriveview::_16446
(004712B0) Customdriveview::TCustomDriveView::IterateSubTree
(00483C26) Driveview::TDriveView::ValidateDirectoryEx
(00470F41) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F13) Vcl::Extctrls::TTimer::Timer
(003C9C0C) System::Classes::_18201
(00031331) USER32.dll
(000220E1) USER32.dll
(000209A0) USER32.dll
(000204EB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.1

Error message:
Invalid access to memory.

Stack trace:
(002B267B) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(0046FC44) Customdriveview::TCustomDriveView::IterateSubTree
(00482592) Driveview::TDriveView::ValidateDirectoryEx
(0046F8D5) Customdriveview::TCustomDriveView::ValidateDirectory
(00480155) Driveview::TDriveView::Change
(002B6EB2) Vcl::Comctrls::TCustomTreeView::CNNotify
(0046F3ED) Customdriveview::TCustomDriveView::CNNotify
(00280E1D) Vcl::Controls::TWinControl::WndProc
(002B716E) Vcl::Comctrls::TCustomTreeView::WndProc
(00280F83) Vcl::Controls::_17076
(00280E1D) Vcl::Controls::TWinControl::WndProc
(00280464) Vcl::Controls::TWinControl::MainWndProc
(003C85A0) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(00037045) USER32.dll
(0003AC0D) USER32.dll
(00073FBB) ntdll.dll.KiUserCallbackDispatcher
(00034E6A) USER32.dll.SendMessageW
(00068881) COMCTL32.dll
(00028892) COMCTL32.dll
(00028767) COMCTL32.dll
(0003EC58) COMCTL32.dll
(00040489) USER32.dll
(00037445) USER32.dll
(00036B22) USER32.dll
(00034CC6) USER32.dll.CallWindowProcW
(00280F2E) Vcl::Controls::TWinControl::DefaultHandler
(00280E1D) Vcl::Controls::TWinControl::WndProc
(002B716E) Vcl::Comctrls::TCustomTreeView::WndProc
(003C85A0) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(00037045) USER32.dll
(0003AC0D) USER32.dll
(00073FBB) ntdll.dll.KiUserCallbackDispatcher
(00034E6A) USER32.dll.SendMessageW
(00385A77) Winapi::Commctrl::TreeView_SelectItem
(0046E34D) Customdriveview::TCustomDriveView::CreateWnd
(0027FEAE) Vcl::Controls::TWinControl::CreateHandle
(0027C2D9) Vcl::Controls::TControl::WndProc
(00280E1D) Vcl::Controls::TWinControl::WndProc
(002B716E) Vcl::Comctrls::TCustomTreeView::WndProc
(0028006E) Vcl::Controls::TWinControl::RecreateWnd
(00280E1D) Vcl::Controls::TWinControl::WndProc

The problem happens rarely. I cannot reproduce it.

The error occurred by itself overnight when the software was on, but I wasn't using it. It was just monitoring the ftp site.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.6

Error message:
Invalid access to memory.

Stack trace:
(002B3CEF) Vcl::Comctrls::TTreeNode::GetTreeView
(0008225F) ntdll.dll
(0006FDBA) ntdll.dll.KiUserExceptionDispatcher
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(004712B8) Customdriveview::TCustomDriveView::IterateSubTree
(00483C2E) Driveview::TDriveView::ValidateDirectoryEx
(00470F49) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F1B) Vcl::Extctrls::TTimer::Timer
(003C9C14) System::Classes::_18201
(0002C2D1) USER32.dll
(0000C305) USER32.dll
(0000BC4F) USER32.dll
(0000BA0B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.1

Error message:
Invalid access to memory.

Stack trace:
(002B267B) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(0046FBB5) Customdriveview::_16446
(0046FBB5) Customdriveview::_16446
(0046FBB5) Customdriveview::_16446
(0046FC44) Customdriveview::TCustomDriveView::IterateSubTree
(00482592) Driveview::TDriveView::ValidateDirectoryEx
(0046F8D5) Customdriveview::TCustomDriveView::ValidateDirectory
(002578A7) Vcl::Extctrls::TTimer::Timer
(003C85A0) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(000351B5) USER32.dll
(00034F7B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.6

Error message:
Invalid access to memory.

Stack trace:
(002B3CEF) Vcl::Comctrls::TTreeNode::GetTreeView
(00097C6F) ntdll.dll
(00077BA1) ntdll.dll.KiUserExceptionDispatcher
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(004712B8) Customdriveview::TCustomDriveView::IterateSubTree
(00483C2E) Driveview::TDriveView::ValidateDirectoryEx
(00470F49) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F1B) Vcl::Extctrls::TTimer::Timer
(003C9C14) System::Classes::_18201
(00031331) USER32.dll
(000220E1) USER32.dll
(000209A0) USER32.dll
(000204EB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

WinScp was left connected when I put Windows to sleep. So probably not so much a bug as an unhandled exception.

WinSCP 5.21.6

Error message:
Invalid access to memory.

Stack trace:
(002B3CEF) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(004712B8) Customdriveview::TCustomDriveView::IterateSubTree
(00483C2E) Driveview::TDriveView::ValidateDirectoryEx
(00470F49) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F1B) Vcl::Extctrls::TTimer::Timer
(003C9C14) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(000351B5) USER32.dll
(00034F7B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21

Error message:
Accesso alla memoria non valido.

Stack trace:
(002B260B) Vcl::Comctrls::TTreeNode::GetTreeView
(00097C6F) ntdll.dll
(00077BA1) ntdll.dll.KiUserExceptionDispatcher
(0046FB45) Customdriveview::_16446
(0046FB45) Customdriveview::_16446
(0046FB45) Customdriveview::_16446
(0046FBD4) Customdriveview::TCustomDriveView::IterateSubTree
(00482522) Driveview::TDriveView::ValidateDirectoryEx
(0046F865) Customdriveview::TCustomDriveView::ValidateDirectory
(00257837) Vcl::Extctrls::TTimer::Timer
(003C8530) System::Classes::_18201
(00031411) USER32.dll
(000221D1) USER32.dll
(00020A90) USER32.dll
(000205DB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.3

Error message:
Accès mémoire invalide.

Trace de la pile :
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(004817B1) Driveview::TDriveView::Change
(002B850E) Vcl::Comctrls::TCustomTreeView::CNNotify
(00470A49) Customdriveview::TCustomDriveView::CNNotify
(00282479) Vcl::Controls::TWinControl::WndProc
(002B87CA) Vcl::Comctrls::TCustomTreeView::WndProc
(002825DF) Vcl::Controls::_17076
(00282479) Vcl::Controls::TWinControl::WndProc
(00281AC0) Vcl::Controls::TWinControl::MainWndProc
(003C9BFC) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(00037045) USER32.dll
(0003AC0D) USER32.dll
(00073FBB) ntdll.dll.KiUserCallbackDispatcher
(00034E6A) USER32.dll.SendMessageW
(00068881) COMCTL32.DLL
(00028892) COMCTL32.DLL
(00028767) COMCTL32.DLL
(0003EC58) COMCTL32.DLL
(00040489) USER32.dll
(00037445) USER32.dll
(00036B22) USER32.dll
(00034CC6) USER32.dll.CallWindowProcW
(0028258A) Vcl::Controls::TWinControl::DefaultHandler
(00282479) Vcl::Controls::TWinControl::WndProc
(002B87CA) Vcl::Comctrls::TCustomTreeView::WndProc
(003C9BFC) System::Classes::_18201
(00040489) USER32.dll
(00037445) USER32.dll
(00037045) USER32.dll
(0003AC0D) USER32.dll
(00073FBB) ntdll.dll.KiUserCallbackDispatcher
(00034E6A) USER32.dll.SendMessageW
(003870D3) Winapi::Commctrl::TreeView_SelectItem
(0046F9A9) Customdriveview::TCustomDriveView::CreateWnd
(0028150A) Vcl::Controls::TWinControl::CreateHandle
(0027D935) Vcl::Controls::TControl::WndProc
(00282479) Vcl::Controls::TWinControl::WndProc
(002B87CA) Vcl::Comctrls::TCustomTreeView::WndProc
(002816CA) Vcl::Controls::TWinControl::RecreateWnd
(00282479) Vcl::Controls::TWinControl::WndProc

The problem happens rarely. I cannot reproduce it.

WinSCP 5.21.6

Error occured while transferring files in the background. No interaction with the app was occuring at the time of the error.

Error message:
Invalid access to memory.

Stack trace:
(002B3CEF) Vcl::Comctrls::TTreeNode::GetTreeView
(00097C6F) ntdll.dll
(00077BA1) ntdll.dll.KiUserExceptionDispatcher
(004712B8) Customdriveview::TCustomDriveView::IterateSubTree
(00483C2E) Driveview::TDriveView::ValidateDirectoryEx
(00470F49) Customdriveview::TCustomDriveView::ValidateDirectory
(004817C9) Driveview::TDriveView::Change
(002B8526) Vcl::Comctrls::TCustomTreeView::CNNotify
(00470A61) Customdriveview::TCustomDriveView::CNNotify
(00282491) Vcl::Controls::TWinControl::WndProc
(002B87E2) Vcl::Comctrls::TCustomTreeView::WndProc
(002825F7) Vcl::Controls::_17076
(00282491) Vcl::Controls::TWinControl::WndProc
(00281AD8) Vcl::Controls::TWinControl::MainWndProc
(003C9C14) System::Classes::_18201
(00031331) USER32.dll
(000220E1) USER32.dll
(00021B65) USER32.dll
(0002BAAD) USER32.dll
(00077B5B) ntdll.dll.KiUserCallbackDispatcher
(00037A33) USER32.dll
(00020BC1) USER32.dll.SendMessageW
(000989E6) COMCTL32.DLL
(000509C8) COMCTL32.DLL
(000508A8) COMCTL32.DLL
(0004957B) COMCTL32.DLL
(00031331) USER32.dll
(000220E1) USER32.dll
(00021A52) USER32.dll.CallWindowProcW
(002825A2) Vcl::Controls::TWinControl::DefaultHandler
(00282491) Vcl::Controls::TWinControl::WndProc
(002B87E2) Vcl::Comctrls::TCustomTreeView::WndProc
(003C9C14) System::Classes::_18201
(00031331) USER32.dll
(000220E1) USER32.dll
(00021B65) USER32.dll
(0002BAAD) USER32.dll
(00077B5B) ntdll.dll.KiUserCallbackDispatcher
(00037A33) USER32.dll
(00020BC1) USER32.dll.SendMessageW
(003870EB) Winapi::Commctrl::TreeView_SelectItem
(0046F9C1) Customdriveview::TCustomDriveView::CreateWnd
(00281522) Vcl::Controls::TWinControl::CreateHandle
(0027D94D) Vcl::Controls::TControl::WndProc
(00282491) Vcl::Controls::TWinControl::WndProc
(002B87E2) Vcl::Comctrls::TCustomTreeView::WndProc
(002816E2) Vcl::Controls::TWinControl::RecreateWnd
(00282491) Vcl::Controls::TWinControl::WndProc

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.6

Error message:
Invalid access to memory.

Stack trace:
(002B3CEF) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(004712B8) Customdriveview::TCustomDriveView::IterateSubTree
(00483C2E) Driveview::TDriveView::ValidateDirectoryEx
(00470F49) Customdriveview::TCustomDriveView::ValidateDirectory
(004817C9) Driveview::TDriveView::Change
(002B8526) Vcl::Comctrls::TCustomTreeView::CNNotify
(00470A61) Customdriveview::TCustomDriveView::CNNotify
(00282491) Vcl::Controls::TWinControl::WndProc
(002B87E2) Vcl::Comctrls::TCustomTreeView::WndProc
(002825F7) Vcl::Controls::_17076
(00282491) Vcl::Controls::TWinControl::WndProc
(00281AD8) Vcl::Controls::TWinControl::MainWndProc
(003C9C14) System::Classes::_18201
(00040379) USER32.dll
(00037335) USER32.dll
(00036F25) USER32.dll
(0003AAFD) USER32.dll
(00073FBB) ntdll.dll.KiUserCallbackDispatcher
(00034D4A) USER32.dll.SendMessageW
(00060DE7) atcuf32.dll
(00006F28)atcuf32.dll
(00028892) COMCTL32.DLL
(00028767) COMCTL32.DLL
(0003EC58) COMCTL32.DLL
(00040379) USER32.dll
(00037335) USER32.dll
(00036A02) USER32.dll
(00034BA6) USER32.dll.CallWindowProcW
(002825A2) Vcl::Controls::TWinControl::DefaultHandler
(00282491) Vcl::Controls::TWinControl::WndProc
(002B87E2) Vcl::Comctrls::TCustomTreeView::WndProc
(003C9C14) System::Classes::_18201
(00040379) USER32.dll
(00037335) USER32.dll
(00036F25) USER32.dll
(0003AAFD) USER32.dll
(00073FBB) ntdll.dll.KiUserCallbackDispatcher
(00034D4A) USER32.dll.SendMessageW
(00060DE7) atcuf32.dll
(00006F28)atcuf32.dll
(0046F9C1) Customdriveview::TCustomDriveView::CreateWnd
(00281522) Vcl::Controls::TWinControl::CreateHandle
(0027D94D) Vcl::Controls::TControl::WndProc
(00282491) Vcl::Controls::TWinControl::WndProc
(002B87E2) Vcl::Comctrls::TCustomTreeView::WndProc
(002816E2) Vcl::Controls::TWinControl::RecreateWnd
(00282491) Vcl::Controls::TWinControl::WndProc

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.19.6

Error message:
Invalid access to memory.

Stack trace:
(002B1C3F) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(0046EC21) Customdriveview::_16446
(0046EC21) Customdriveview::_16446
(0046ECB0) Customdriveview::TCustomDriveView::IterateSubTree
(0048120E) Driveview::TDriveView::ValidateDirectoryEx
(0046E941) Customdriveview::TCustomDriveView::ValidateDirectory
(00256E6B) Vcl::Extctrls::TTimer::Timer
(003C7B64) System::Classes::_18201
(00040379) USER32.dll
(00037335) USER32.dll
(00035095) USER32.dll
(00034E5B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.6

Error message:
メモリのアクセス違反

スタック トレース:
(002B3CEF) Vcl::Comctrls::TTreeNode::GetTreeView
(00097F5F) ntdll.dll
(00076171) ntdll.dll.KiUserExceptionDispatcher
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(00471229) Customdriveview::_16446
(004712B8) Customdriveview::TCustomDriveView::IterateSubTree
(00483C2E) Driveview::TDriveView::ValidateDirectoryEx
(00470F49) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F1B) Vcl::Extctrls::TTimer::Timer
(003C9C14) System::Classes::_18201
(00046D50) USER32.dll
(00026115) USER32.dll
(00024A43) USER32.dll
(0002457B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.19.6

Error message:
Ошибка доступа к памяти.

Трассировка стека:
(002B1C3F) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(0046EC21) Customdriveview::_16446
(0046EC21) Customdriveview::_16446
(0046EC21) Customdriveview::_16446
(0046ECB0) Customdriveview::TCustomDriveView::IterateSubTree
(0048120E) Driveview::TDriveView::ValidateDirectoryEx
(0046E941) Customdriveview::TCustomDriveView::ValidateDirectory
(00256E6B) Vcl::Extctrls::TTimer::Timer
(003C7B64) System::Classes::_18201
(00040379) USER32.dll
(00037335) USER32.dll
(00035095) USER32.dll
(00034E5B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.5

Error message:
Invalid access to memory.

Stack trace:
(002B3CE7) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(00471221) Customdriveview::_16446
(00471221) Customdriveview::_16446
(004712B0) Customdriveview::TCustomDriveView::IterateSubTree
(00483C26) Driveview::TDriveView::ValidateDirectoryEx
(00470F41) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F13) Vcl::Extctrls::TTimer::Timer
(003C9C0C) System::Classes::_18201
(00040379) USER32.dll
(00037335) USER32.dll
(00035095) USER32.dll
(00034E5B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

@b141: Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

RDP log off

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.19.6

Error message:
Invalid access to memory.

Stack trace:
(002B1C3F) Vcl::Comctrls::TTreeNode::GetTreeView
(000879EF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(0046EC21) Customdriveview::_16446
(0046EC21) Customdriveview::_16446
(0046EC21) Customdriveview::_16446
(0046ECB0) Customdriveview::TCustomDriveView::IterateSubTree
(0048120E) Driveview::TDriveView::ValidateDirectoryEx
(0046E941) Customdriveview::TCustomDriveView::ValidateDirectory
(00256E6B) Vcl::Extctrls::TTimer::Timer
(003C7B64) System::Classes::_18201
(0003FF19) USER32.dll
(00036EC5) USER32.dll
(00034C35) USER32.dll
(000349FB) USER32.dll.DispatchMessageW

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.5

Error message:
Invalid access to memory.

Stack trace:
(002B3CE7) Vcl::Comctrls::TTreeNode::GetTreeView
(00097C6F) ntdll.dll
(00077BA1) ntdll.dll.KiUserExceptionDispatcher
(00471221) Customdriveview::_16446
(00471221) Customdriveview::_16446
(004712B0) Customdriveview::TCustomDriveView::IterateSubTree
(00483C26) Driveview::TDriveView::ValidateDirectoryEx
(00470F41) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F13) Vcl::Extctrls::TTimer::Timer
(003C9C0C) System::Classes::_18201
(00031411) USER32.dll
(000221D1) USER32.dll
(00020A90) USER32.dll
(000205DB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.5

Error message:
Invalid access to memory.

Stack trace:
(002B3CE7) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(00471221) Customdriveview::_16446
(00471221) Customdriveview::_16446
(00471221) Customdriveview::_16446
(00471221) Customdriveview::_16446
(00471221) Customdriveview::_16446
(004712B0) Customdriveview::TCustomDriveView::IterateSubTree
(00483C26) Driveview::TDriveView::ValidateDirectoryEx
(00470F41) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F13) Vcl::Extctrls::TTimer::Timer
(003C9C0C) System::Classes::_18201
(00040519) USER32.dll
(000374E5) USER32.dll
(00035235) USER32.dll
(00034FFB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.5

Error message:
Unzulässiger Zugriff auf einen Speicherbereich.

Stapelverfolgung:
(002B3CE7) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(004712B0) Customdriveview::TCustomDriveView::IterateSubTree
(00483C26) Driveview::TDriveView::ValidateDirectoryEx
(00470F41) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F13) Vcl::Extctrls::TTimer::Timer
(003C9C0C) System::Classes::_18201
(00040379) USER32.dll
(00037335) USER32.dll
(00035095) USER32.dll
(00034E5B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.3

Error message:
Ошибка доступа к памяти.

Трассировка стека:
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(0006248E) ntdll.dll
(0000F15E) ntdll.dll.KiUserExceptionDispatcher
(00471211) Customdriveview::_16446
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F03) Vcl::Extctrls::TTimer::Timer
(003C9BFC) System::Classes::_18201
(000152F7) USER32.dll
(00015D35) USER32.dll
(000167BF) USER32.dll
(00016885) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.5

Error message:
Invalid access to memory.

Stack trace:
(002B3CE7) Vcl::Comctrls::TTreeNode::GetTreeView
(00097F5F) ntdll.dll
(00076171) ntdll.dll.KiUserExceptionDispatcher
(00471221) Customdriveview::_16446
(00471221) Customdriveview::_16446
(00471221) Customdriveview::_16446
(00471221) Customdriveview::_16446
(004712B0) Customdriveview::TCustomDriveView::IterateSubTree
(00483C26) Driveview::TDriveView::ValidateDirectoryEx
(00470F41) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F13) Vcl::Extctrls::TTimer::Timer
(003C9C0C) System::Classes::_18201
(00046D50) USER32.dll
(00026115) USER32.dll
(00024A43) USER32.dll
(0002457B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.5

Error message:
Invalid access to memory.

Stack trace:
(002B3CE7) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(00471221) Customdriveview::_16446
(00471221) Customdriveview::_16446
(004712B0) Customdriveview::TCustomDriveView::IterateSubTree
(00483C26) Driveview::TDriveView::ValidateDirectoryEx
(00470F41) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F13) Vcl::Extctrls::TTimer::Timer
(003C9C0C) System::Classes::_18201
(00040519) USER32.dll
(000374E5) USER32.dll
(00035235) USER32.dll
(00034FFB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.5

Error message:
Invalid access to memory.

Stack trace:
(002B3CE7) Vcl::Comctrls::TTreeNode::GetTreeView
(000879EF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(00471221) Customdriveview::_16446
(00471221) Customdriveview::_16446
(004712B0) Customdriveview::TCustomDriveView::IterateSubTree
(00483C26) Driveview::TDriveView::ValidateDirectoryEx
(00470F41) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F13) Vcl::Extctrls::TTimer::Timer
(003C9C0C) System::Classes::_18201
(00040109) USER32.dll
(000370C5) USER32.dll
(00034E35) USER32.dll
(00034BFB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

On closing WinSCP it seems to keep a session alive. For instance if I reopen the windows session I find several notifications that the connection is broken. Today in addition I found this Memory Error. I could not close WinSCP. I had to go to Task Manager to individually kill several WinSCP tasks.

I'm looking (again) at WinSCP options to try to find a Close option that applies.

If you could provide a ticket number then I'll send evidence at least of the "keep alive but connection broken" messages when it appears.

It is not a big nuisance but it may be worth your while to know of it. Usual disclaimer: any advice gratefully received.

Thanks
David Denny
Trujillo, Perú.



<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.5

Error message:
Invalid access to memory.

Stack trace:
(002B3CE7) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(00471221) Customdriveview::_16446
(00471221) Customdriveview::_16446
(004712B0) Customdriveview::TCustomDriveView::IterateSubTree
(00483C26) Driveview::TDriveView::ValidateDirectoryEx
(00470F41) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F13) Vcl::Extctrls::TTimer::Timer
(003C9C0C) System::Classes::_18201
(00040519) USER32.dll
(000374E5) USER32.dll
(00035235) USER32.dll
(00034FFB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.5

Error message:
Unzulässiger Zugriff auf einen Speicherbereich.

Stapelverfolgung:
(002B3CE7) Vcl::Comctrls::TTreeNode::GetTreeView
(00097F5F) ntdll.dll
(00076171) ntdll.dll.KiUserExceptionDispatcher
(004712B0) Customdriveview::TCustomDriveView::IterateSubTree
(00483C26) Driveview::TDriveView::ValidateDirectoryEx
(00470F41) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F13) Vcl::Extctrls::TTimer::Timer
(003C9C0C) System::Classes::_18201
(00046D50) USER32.dll
(00026115) USER32.dll
(00024A43) USER32.dll
(0002457B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

@majidpya: Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.3

Error message:
Invalid access to memory.

Stack trace:
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(00471211) Customdriveview::_16446
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F03) Vcl::Extctrls::TTimer::Timer
(003C9BFC) System::Classes::_18201
(00040519) USER32.dll
(000374E5) USER32.dll
(00035235) USER32.dll
(00034FFB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.3

Error message:
Invalid access to memory.

Stack trace:
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(0008402F) ntdll.dll
(00071931) ntdll.dll.KiUserExceptionDispatcher
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F03) Vcl::Extctrls::TTimer::Timer
(003C9BFC) System::Classes::_18201
(00045359) USER32.dll
(00036297) USER32.dll
(000353D6) USER32.dll
(000351AB) USER32.dll.DispatchMessageW

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.5

Error message:
Invalid access to memory.

Stack trace:
(002B3CE7) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(004821EC) Driveview::TDriveView::RefreshRootNodes
(0048039D) Driveview::TDriveView::InternalWndProc
(003C9C0C) System::Classes::_18201
(00040519) USER32.dll
(000374E5) USER32.dll
(00035235) USER32.dll
(00034FFB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
I do not know what happened. I think that WinSCP was open and logged into a site when I put my Win 11 laptop in Sleep. A few minutes after I turned the laptop on I saw the WinSCP error.

WinSCP 5.21.5

Error message:
Invalid access to memory.

Stack trace:
(002B3CE7) Vcl::Comctrls::TTreeNode::GetTreeView
(00097BBF) ntdll.dll
(00077B51) ntdll.dll.KiUserExceptionDispatcher
(00471221) Customdriveview::_16446
(004712B0) Customdriveview::TCustomDriveView::IterateSubTree
(00483C26) Driveview::TDriveView::ValidateDirectoryEx
(00470F41) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F13) Vcl::Extctrls::TTimer::Timer
(003C9C0C) System::Classes::_18201
(00031511) USER32.dll
(000222E1) USER32.dll
(00020BA0) USER32.dll
(000206EB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.5

Error message:
Invalid access to memory.

Stack trace:
(002B3CE7) Vcl::Comctrls::TTreeNode::GetTreeView
(00097F5F) ntdll.dll
(00076171) ntdll.dll.KiUserExceptionDispatcher
(004712B0) Customdriveview::TCustomDriveView::IterateSubTree
(00483C26) Driveview::TDriveView::ValidateDirectoryEx
(00470F41) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F13) Vcl::Extctrls::TTimer::Timer
(003C9C0C) System::Classes::_18201
(00046D50) USER32.dll
(00026115) USER32.dll
(00024A43) USER32.dll
(0002457B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.5

Error message:
Invalid access to memory.

Stack trace:
(002B3CE7) Vcl::Comctrls::TTreeNode::GetTreeView
(00087AFF) ntdll.dll
(00073FA1) ntdll.dll.KiUserExceptionDispatcher
(00471221) Customdriveview::_16446
(004712B0) Customdriveview::TCustomDriveView::IterateSubTree
(00483C26) Driveview::TDriveView::ValidateDirectoryEx
(00470F41) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F13) Vcl::Extctrls::TTimer::Timer
(003C9C0C) System::Classes::_18201
(0003FBC9) USER32.dll
(00036B85) USER32.dll
(000348F5) USER32.dll
(000346BB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

I believe this happened because I changed networks while still having winSCP open with an active connection.

WinSCP 5.21.5

Error message:
Invalid access to memory.

Stack trace:
(002B3CE7) Vcl::Comctrls::TTreeNode::GetTreeView
(00097F5F) ntdll.dll
(00076171) ntdll.dll.KiUserExceptionDispatcher
(00471221) Customdriveview::_16446
(00471221) Customdriveview::_16446
(00471221) Customdriveview::_16446
(004712B0) Customdriveview::TCustomDriveView::IterateSubTree
(00483C26) Driveview::TDriveView::ValidateDirectoryEx
(00470F41) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F13) Vcl::Extctrls::TTimer::Timer
(003C9C0C) System::Classes::_18201
(00046D50) USER32.dll
(00026115) USER32.dll
(00024A43) USER32.dll
(0002457B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.1

Error message:
Unzulässiger Zugriff auf einen Speicherbereich.

Stapelverfolgung:
(002B267B) Vcl::Comctrls::TTreeNode::GetTreeView
(00087B7F) ntdll.dll
(00074001) ntdll.dll.KiUserExceptionDispatcher
(0046FC44) Customdriveview::TCustomDriveView::IterateSubTree
(00482592) Driveview::TDriveView::ValidateDirectoryEx
(0046F8D5) Customdriveview::TCustomDriveView::ValidateDirectory
(002578A7) Vcl::Extctrls::TTimer::Timer
(003C85A0) System::Classes::_18201
(00040519) USER32.dll
(000374E5) USER32.dll
(00035235) USER32.dll
(00034FFB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.3

Error message:
Invalid access to memory.

Stack trace:
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(00087AFF) ntdll.dll
(00073FA1) ntdll.dll.KiUserExceptionDispatcher
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F03) Vcl::Extctrls::TTimer::Timer
(003C9BFC) System::Classes::_18201
(0003FBC9) USER32.dll. ?? ::ClipboardFormatListener
(00036B85) USER32.dll.unsigned short
(000348F5) USER32.dll.char
(000346BB) USER32.dll.char

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.3

Error message:
Invalid access to memory.

Stack trace:
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(00087AFF) ntdll.dll
(00073FA1) ntdll.dll.KiUserExceptionDispatcher
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F03) Vcl::Extctrls::TTimer::Timer
(003C9BFC) System::Classes::_18201
(0003FBC9) USER32.dll
(00036B85) USER32.dll
(000348F5) USER32.dll
(000346BB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.3

Error message:
Invalid access to memory.

Stack trace:
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(00087AFF) ntdll.dll
(00073FA1) ntdll.dll.KiUserExceptionDispatcher
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F03) Vcl::Extctrls::TTimer::Timer
(003C9BFC) System::Classes::_18201
(0003FBC9) USER32.dll
(00036B85) USER32.dll
(000348F5) USER32.dll
(000346BB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.1

Error message:
Ошибка доступа к памяти.

Трассировка стека:
(002B267B) Vcl::Comctrls::TTreeNode::GetTreeView
(000879EF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(0046FC44) Customdriveview::TCustomDriveView::IterateSubTree
(00482592) Driveview::TDriveView::ValidateDirectoryEx
(0046F8D5) Customdriveview::TCustomDriveView::ValidateDirectory
(002578A7) Vcl::Extctrls::TTimer::Timer
(003C85A0) System::Classes::_18201
(0003FF19) USER32.dll
(00036EC5) USER32.dll
(00034C35) USER32.dll
(000349FB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.3

Error message:
Invalid access to memory.

Stack trace:
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(00097BBF) ntdll.dll
(00077B51) ntdll.dll.KiUserExceptionDispatcher
(00471211) Customdriveview::_16446
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F03) Vcl::Extctrls::TTimer::Timer
(003C9BFC) System::Classes::_18201
(00031751) USER32.dll
(000224E1) USER32.dll
(00020D90) USER32.dll
(000208DB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.3

Error message:
Invalid access to memory.

Stack trace:
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(00097F5F) ntdll.dll
(00076171) ntdll.dll.KiUserExceptionDispatcher
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F03) Vcl::Extctrls::TTimer::Timer
(003C9BFC) System::Classes::_18201
(00046DB0) USER32.dll
(00026165) USER32.dll
(00024A93) USER32.dll
(000245CB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

Happened randomly

WinSCP 5.21.3

Error message:
Invalid access to memory.

Stack trace:
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(00087C2F) ntdll.dll
(00074081) ntdll.dll.KiUserExceptionDispatcher
(00471211) Customdriveview::_16446
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F03) Vcl::Extctrls::TTimer::Timer
(003C9BFC) System::Classes::_18201
(00040509) USER32.dll
(000374B5) USER32.dll
(00035225) USER32.dll
(00034FDB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

just popped up i wasn't doing anything in particular with it

WinSCP 5.21.3

Error message:
Invalid access to memory.

Stack trace:
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(00087AFF) ntdll.dll
(00073FA1) ntdll.dll.KiUserExceptionDispatcher
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F03) Vcl::Extctrls::TTimer::Timer
(003C9BFC) System::Classes::_18201
(0003FBC9) USER32.dll
(00036B85) USER32.dll
(000348F5) USER32.dll
(000346BB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.2

Error message:
Unzulässiger Zugriff auf einen Speicherbereich.

Stapelverfolgung:
(002B473B) Vcl::Comctrls::TTreeNode::GetTreeView
(00087AFF) ntdll.dll
(00073FA1) ntdll.dll.KiUserExceptionDispatcher
(00471C75) Customdriveview::_16446
(00471D04) Customdriveview::TCustomDriveView::IterateSubTree
(00484652) Driveview::TDriveView::ValidateDirectoryEx
(00471995) Customdriveview::TCustomDriveView::ValidateDirectory
(00259967) Vcl::Extctrls::TTimer::Timer
(003CA660) System::Classes::_18201
(0003FBC9) USER32.dll
(00036B85) USER32.dll
(000348F5) USER32.dll
(000346BB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
I left it open overnight and all my sessions have this error. I didn't do anything.
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.3

Error message:
Invalid access to memory.

Stack trace:
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(000879EF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F03) Vcl::Extctrls::TTimer::Timer
(003C9BFC) System::Classes::_18201
(0003FF19) USER32.dll
(00036EC5) USER32.dll
(00034C35) USER32.dll
(000349FB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.19.6

Error message:
Invalid access to memory.

Stack trace:
(002B1C3F) Vcl::Comctrls::TTreeNode::GetTreeView
(00087AFF) ntdll.dll
(00073FA1) ntdll.dll.KiUserExceptionDispatcher
(0046EC21) Customdriveview::_16446
(0046EC21) Customdriveview::_16446
(0046ECB0) Customdriveview::TCustomDriveView::IterateSubTree
(0048120E) Driveview::TDriveView::ValidateDirectoryEx
(0046E941) Customdriveview::TCustomDriveView::ValidateDirectory
(00256E6B) Vcl::Extctrls::TTimer::Timer
(003C7B64) System::Classes::_18201
(0003FBC9) USER32.dll
(00036B85) USER32.dll
(000348F5) USER32.dll
(000346BB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

Happened when the PC was started after sleep mode. WinSCP wasn't opened manually (but it was up and running before going to sleep mode). Didn't happen to me before.

<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21

Error message:
Invalid access to memory.

Stack trace:
(002B260B) Vcl::Comctrls::TTreeNode::GetTreeView
(00097BBF) ntdll.dll
(00077B51) ntdll.dll.KiUserExceptionDispatcher
(0046FB45) Customdriveview::_16446
(0046FBD4) Customdriveview::TCustomDriveView::IterateSubTree
(00482522) Driveview::TDriveView::ValidateDirectoryEx
(0046F865) Customdriveview::TCustomDriveView::ValidateDirectory
(00257837) Vcl::Extctrls::TTimer::Timer
(003C8530) System::Classes::_18201
(00031551) USER32.dll
(00022311) USER32.dll
(00020BD0) USER32.dll
(0002071B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.19.6

Error message:
Invalid access to memory.

Stack trace:
(002B1C3F) Vcl::Comctrls::TTreeNode::GetTreeView
(00087AFF) ntdll.dll
(00073FA1) ntdll.dll.KiUserExceptionDispatcher
(0046EC21) Customdriveview::_16446
(0046EC21) Customdriveview::_16446
(0046ECB0) Customdriveview::TCustomDriveView::IterateSubTree
(0048120E) Driveview::TDriveView::ValidateDirectoryEx
(0046E941) Customdriveview::TCustomDriveView::ValidateDirectory
(00256E6B) Vcl::Extctrls::TTimer::Timer
(003C7B64) System::Classes::_18201
(0003FBC9) USER32.dll
(00036B85) USER32.dll
(000348F5) USER32.dll
(000346BB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

WinSCP was left open, connected to one computer. I didn't do anything.
<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.3

Error message:
Invalid access to memory.

Stack trace:
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(00097F5F) ntdll.dll
(00076171) ntdll.dll.KiUserExceptionDispatcher
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F03) Vcl::Extctrls::TTimer::Timer
(003C9BFC) System::Classes::_18201
(00046D50) USER32.dll
(00026115) USER32.dll
(00024A43) USER32.dll
(0002457B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.3

Error message:
Invalid access to memory.

Stack trace:
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(00087AFF) ntdll.dll
(00073FA1) ntdll.dll.KiUserExceptionDispatcher
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F03) Vcl::Extctrls::TTimer::Timer
(003C9BFC) System::Classes::_18201
(0003FBC9) USER32.dll
(00036B85) USER32.dll
(000348F5) USER32.dll
(000346BB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.2

Error message:
Invalid access to memory.

Stack trace:
(002B473B) Vcl::Comctrls::TTreeNode::GetTreeView
(000879EF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(00471C75) Customdriveview::_16446
(00471C75) Customdriveview::_16446
(00471C75) Customdriveview::_16446
(00471C75) Customdriveview::_16446
(00471C75) Customdriveview::_16446
(00471C75) Customdriveview::_16446
(00471D04) Customdriveview::TCustomDriveView::IterateSubTree
(00484652) Driveview::TDriveView::ValidateDirectoryEx
(00471995) Customdriveview::TCustomDriveView::ValidateDirectory
(00259967) Vcl::Extctrls::TTimer::Timer
(003CA660) System::Classes::_18201
(0003FF19) USER32.dll
(00036EC5) USER32.dll
(00034C35) USER32.dll
(000349FB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

It's almost a daily certain thing that winscp shuts down after a while when connected to aws s3, but I can't reprocduce it.
Most often it just shuts down without a dialog though.
Maybe there is a log file, if so I could provide it given the location.

WinSCP 5.21.3

Error message:
Invalid access to memory.

Stack trace:
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(000879EF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F03) Vcl::Extctrls::TTimer::Timer
(003C9BFC) System::Classes::_18201
(0003FF19) USER32.dll
(00036EC5) USER32.dll
(00034C35) USER32.dll
(000349FB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.3

Error message:
Accès mémoire invalide.

Trace de la pile :
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(00095F0F) ntdll.dll
(000751B1) ntdll.dll.KiUserExceptionDispatcher
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(00471211) Customdriveview::_16446
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F03) Vcl::Extctrls::TTimer::Timer
(003C9BFC) System::Classes::_18201
(00047F21) USER32.dll
(00028705) USER32.dll
(00027210) USER32.dll
(00026D3B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.3

Error message:
Ошибка доступа к памяти.

Трассировка стека:
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(00087AFF) ntdll.dll
(00073FA1) ntdll.dll.KiUserExceptionDispatcher
(00471211) Customdriveview::_16446
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(00258F03) Vcl::Extctrls::TTimer::Timer
(003C9BFC) System::Classes::_18201
(0003FBA9) USER32.dll
(00036B65) USER32.dll
(000348D5) USER32.dll
(0003469B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

I was away from the Computer, when this happened - I can't tell what caused it.

WinSCP 5.21.2

Error message:
Invalid access to memory.

Stack trace:
(002B473B) Vcl::Comctrls::TTreeNode::GetTreeView
(00085FBF) ntdll.dll
(00072A61) ntdll.dll.KiUserExceptionDispatcher
(00471C75) Customdriveview::_16446
(00471C75) Customdriveview::_16446
(00471D04) Customdriveview::TCustomDriveView::IterateSubTree
(00484652) Driveview::TDriveView::ValidateDirectoryEx
(00471995) Customdriveview::TCustomDriveView::ValidateDirectory
(00259967) Vcl::Extctrls::TTimer::Timer
(003CA660) System::Classes::_18201
(00044D19) USER32.dll
(00035827) USER32.dll
(00034966) USER32.dll
(0003473B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.3

Error message:
Unzulässiger Zugriff auf einen Speicherbereich.

Stapelverfolgung:
(002B3CD7) Vcl::Comctrls::TTreeNode::GetTreeView
(00097F5F) ntdll.dll
(00076171) ntdll.dll.KiUserExceptionDispatcher
(004712A0) Customdriveview::TCustomDriveView::IterateSubTree
(00483BEE) Driveview::TDriveView::ValidateDirectoryEx
(00470F31) Customdriveview::TCustomDriveView::ValidateDirectory
(004817B1) Driveview::TDriveView::Change
(002B850E) Vcl::Comctrls::TCustomTreeView::CNNotify
(00470A49) Customdriveview::TCustomDriveView::CNNotify
(00282479) Vcl::Controls::TWinControl::WndProc
(002B87CA) Vcl::Comctrls::TCustomTreeView::WndProc
(002825DF) Vcl::Controls::_17076
(00282479) Vcl::Controls::TWinControl::WndProc
(00281AC0) Vcl::Controls::TWinControl::MainWndProc
(003C9BFC) System::Classes::_18201
(00046DB0) USER32.dll
(00026165) USER32.dll
(00025BF5) USER32.dll
(0002EA4D) USER32.dll
(0007612A) ntdll.dll.KiUserCallbackDispatcher
(0004D2F7) USER32.dll
(00024CB1) USER32.dll.SendMessageW
(00000303)bdhkm32.dll
(0001846D) bdhkm32.dll
(000102A0) bdhkm32.dll
(0008A369) COMCTL32.DLL
(0001E993) COMCTL32.DLL
(0001E86A) COMCTL32.DLL
(0005048A) COMCTL32.DLL
(00046DB0) USER32.dll
(00026165) USER32.dll
(00024D9A) USER32.dll.CallWindowProcW
(0028258A) Vcl::Controls::TWinControl::DefaultHandler
(00282479) Vcl::Controls::TWinControl::WndProc
(002B87CA) Vcl::Comctrls::TCustomTreeView::WndProc
(003C9BFC) System::Classes::_18201
(00046DB0) USER32.dll
(00026165) USER32.dll
(00025BF5) USER32.dll
(0002EA4D) USER32.dll
(0007612A) ntdll.dll.KiUserCallbackDispatcher
(0004D2F7) USER32.dll
(00024CB1) USER32.dll.SendMessageW
(00000303)bdhkm32.dll
(0001846D) bdhkm32.dll
(000102A0) bdhkm32.dll
(003870D3) Winapi::Commctrl::TreeView_SelectItem
(0046F9A9) Customdriveview::TCustomDriveView::CreateWnd
(0028150A) Vcl::Controls::TWinControl::CreateHandle
(0027D935) Vcl::Controls::TControl::WndProc
(00282479) Vcl::Controls::TWinControl::WndProc
(002B87CA) Vcl::Comctrls::TCustomTreeView::WndProc
(002816CA) Vcl::Controls::TWinControl::RecreateWnd
(00282479) Vcl::Controls::TWinControl::WndProc

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.19.6

Error message:
Invalid access to memory.

Stack trace:
(002B1C3F) Vcl::Comctrls::TTreeNode::GetTreeView
(000879EF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(0046EC21) Customdriveview::_16446
(0046EC21) Customdriveview::_16446
(0046EC21) Customdriveview::_16446
(0046ECB0) Customdriveview::TCustomDriveView::IterateSubTree
(0048120E) Driveview::TDriveView::ValidateDirectoryEx
(0046E941) Customdriveview::TCustomDriveView::ValidateDirectory
(00256E6B) Vcl::Extctrls::TTimer::Timer
(003C7B64) System::Classes::_18201
(0003FF19) USER32.dll
(00036EC5) USER32.dll
(00034C35) USER32.dll
(000349FB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.1

Error message:
Invalid access to memory.

Stack trace:
(002B267B) Vcl::Comctrls::TTreeNode::GetTreeView
(000879EF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(0046FBB5) Customdriveview::_16446
(0046FBB5) Customdriveview::_16446
(0046FBB5) Customdriveview::_16446
(0046FBB5) Customdriveview::_16446
(0046FBB5) Customdriveview::_16446
(0046FC44) Customdriveview::TCustomDriveView::IterateSubTree
(00482592) Driveview::TDriveView::ValidateDirectoryEx
(0046F8D5) Customdriveview::TCustomDriveView::ValidateDirectory
(002578A7) Vcl::Extctrls::TTimer::Timer
(003C85A0) System::Classes::_18201
(0003FF19) USER32.dll
(00036EC5) USER32.dll
(00034C35) USER32.dll
(000349FB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

@jlionelmo: Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.19.6

Error message:
Acceso a memoria no válido

Traza de la pila:
(002B1C3F) Vcl::Comctrls::TTreeNode::GetTreeView
(000980DF) ntdll.dll
(000762A1) ntdll.dll.KiUserExceptionDispatcher
(0046EC21) Customdriveview::_16446
(0046EC21) Customdriveview::_16446
(0046EC21) Customdriveview::_16446
(0046EC21) Customdriveview::_16446
(0046ECB0) Customdriveview::TCustomDriveView::IterateSubTree
(0048120E) Driveview::TDriveView::ValidateDirectoryEx
(0046E941) Customdriveview::TCustomDriveView::ValidateDirectory
(00256E6B) Vcl::Extctrls::TTimer::Timer
(003C7B64) System::Classes::_18201
(00046DB0) USER32.dll
(00026165) USER32.dll
(00024A93) USER32.dll
(000245CB) USER32.dll.DispatchMessageW

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.1

Error message:
Invalid access to memory.

Stack trace:
(002B267B) Vcl::Comctrls::TTreeNode::GetTreeView
(00088FCF) ntdll.dll
(00074221) ntdll.dll.KiUserExceptionDispatcher
(0046FC44) Customdriveview::TCustomDriveView::IterateSubTree
(00482592) Driveview::TDriveView::ValidateDirectoryEx
(0046F8D5) Customdriveview::TCustomDriveView::ValidateDirectory
(00480155) Driveview::TDriveView::Change
(002B6EB2) Vcl::Comctrls::TCustomTreeView::CNNotify
(0046F3ED) Customdriveview::TCustomDriveView::CNNotify
(00280E1D) Vcl::Controls::TWinControl::WndProc
(002B716E) Vcl::Comctrls::TCustomTreeView::WndProc
(00280F83) Vcl::Controls::_17076
(00280E1D) Vcl::Controls::TWinControl::WndProc
(00280464) Vcl::Controls::TWinControl::MainWndProc
(003C85A0) System::Classes::_18201
(00043719) USER32.dll
(00024257) USER32.dll
(00023DF5) USER32.dll
(0002D44D) USER32.dll
(000741DB) ntdll.dll.KiUserCallbackDispatcher
(000236CE) USER32.dll.SendMessageW
(0005A141) COMCTL32.DLL
(0001DB25) COMCTL32.DLL
(0001D9FA) COMCTL32.DLL
(00023508) COMCTL32.DLL
(00043719) USER32.dll
(00024257) USER32.dll
(000237AA) USER32.dll.CallWindowProcW
(00280F2E) Vcl::Controls::TWinControl::DefaultHandler
(00280E1D) Vcl::Controls::TWinControl::WndProc
(002B716E) Vcl::Comctrls::TCustomTreeView::WndProc
(003C85A0) System::Classes::_18201
(00043719) USER32.dll
(00024257) USER32.dll
(00023DF5) USER32.dll
(0002D44D) USER32.dll
(000741DB) ntdll.dll.KiUserCallbackDispatcher
(000236CE) USER32.dll.SendMessageW
(00385A77) Winapi::Commctrl::TreeView_SelectItem
(0046E34D) Customdriveview::TCustomDriveView::CreateWnd
(0027FEAE) Vcl::Controls::TWinControl::CreateHandle
(0027C2D9) Vcl::Controls::TControl::WndProc
(00280E1D) Vcl::Controls::TWinControl::WndProc
(002B716E) Vcl::Comctrls::TCustomTreeView::WndProc
(0028006E) Vcl::Controls::TWinControl::RecreateWnd
(00280E1D) Vcl::Controls::TWinControl::WndProc

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.2

Error message:
Chyba přístupu do paměti.

Stack trace:
(002B473B) Vcl::Comctrls::TTreeNode::GetTreeView
(000879EF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(00471C75) Customdriveview::_16446
(00471C75) Customdriveview::_16446
(00471C75) Customdriveview::_16446
(00471D04) Customdriveview::TCustomDriveView::IterateSubTree
(00484652) Driveview::TDriveView::ValidateDirectoryEx
(00471995) Customdriveview::TCustomDriveView::ValidateDirectory
(00259967) Vcl::Extctrls::TTimer::Timer
(003CA660) System::Classes::_18201
(00040109) USER32.dll
(000370C5) USER32.dll
(00034E35) USER32.dll
(00034BFB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.19.6

Error message:
Invalid access to memory.

Stack trace:
(002B1C3F)
(000879EF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(0046EC21)
(0046EC21)
(0046EC21)
(0046EC21)
(0046EC21)
(0046ECB0)
(0048120E)
(0046E941)
(00256E6B)
(003C7B64)
(00040109) USER32.dll
(000370C5) USER32.dll
(00034E35) USER32.dll
(00034BFB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.2

Error message:
Invalid access to memory.

Stack trace:
(002B473B) Vcl::Comctrls::TTreeNode::GetTreeView
(000879EF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(00471C75) Customdriveview::_16446
(00471C75) Customdriveview::_16446
(00471C75) Customdriveview::_16446
(00471C75) Customdriveview::_16446
(00471D04) Customdriveview::TCustomDriveView::IterateSubTree
(00484652) Driveview::TDriveView::ValidateDirectoryEx
(00471995) Customdriveview::TCustomDriveView::ValidateDirectory
(00259967) Vcl::Extctrls::TTimer::Timer
(003CA660) System::Classes::_18201
(0003FF19) USER32.dll
(00036EC5) USER32.dll
(00034C35) USER32.dll
(000349FB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.2

Error message:
Invalid access to memory.

Stack trace:
(002B473B) Vcl::Comctrls::TTreeNode::GetTreeView
(000879EF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(00471C75) Customdriveview::_16446
(00471C75) Customdriveview::_16446
(00471C75) Customdriveview::_16446
(00471C75) Customdriveview::_16446
(00471C75) Customdriveview::_16446
(00471C75) Customdriveview::_16446
(00471D04) Customdriveview::TCustomDriveView::IterateSubTree
(00484652) Driveview::TDriveView::ValidateDirectoryEx
(00471995) Customdriveview::TCustomDriveView::ValidateDirectory
(00259967) Vcl::Extctrls::TTimer::Timer
(003CA660) System::Classes::_18201
(00040109) USER32.dll
(000370C5) USER32.dll
(00034E35) USER32.dll
(00034BFB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

@ziyanda.khumalo: Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.1

Error message:
Invalid access to memory.

Stack trace:
(002B267B) Vcl::Comctrls::TTreeNode::GetTreeView
(00085FBF) ntdll.dll
(00072A61) ntdll.dll.KiUserExceptionDispatcher
(0046FBB5) Customdriveview::_16446
(0046FBB5) Customdriveview::_16446
(0046FBB5) Customdriveview::_16446
(0046FBB5) Customdriveview::_16446
(0046FC44) Customdriveview::TCustomDriveView::IterateSubTree
(00482592) Driveview::TDriveView::ValidateDirectoryEx
(0046F8D5) Customdriveview::TCustomDriveView::ValidateDirectory
(002578A7) Vcl::Extctrls::TTimer::Timer
(003C85A0) System::Classes::_18201
(00044D19) USER32.dll
(00035827) USER32.dll
(00034966) USER32.dll
(0003473B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.19.6

Error message:
Invalid access to memory.

Stack trace:
(002B1C3F) Vcl::Comctrls::TTreeNode::GetTreeView
(0008788F) ntdll.dll
(00073EC1) ntdll.dll.KiUserExceptionDispatcher
(0046ECB0) Customdriveview::TCustomDriveView::IterateSubTree
(0048120E) Driveview::TDriveView::ValidateDirectoryEx
(0046E941) Customdriveview::TCustomDriveView::ValidateDirectory
(0047EEB9) Driveview::TDriveView::Change
(002B6476) Vcl::Comctrls::TCustomTreeView::CNNotify
(0046E459) Customdriveview::TCustomDriveView::CNNotify
(002803E1) Vcl::Controls::TWinControl::WndProc
(002B6732) Vcl::Comctrls::TCustomTreeView::WndProc
(00280547) Vcl::Controls::_17076
(002803E1) Vcl::Controls::TWinControl::WndProc
(0027FA28) Vcl::Controls::TWinControl::MainWndProc
(003C7B64) System::Classes::_18201
(00040099) USER32.dll
(00037055) USER32.dll
(00036C55) USER32.dll
(0003A81D) USER32.dll
(00073E7B) ntdll.dll.KiUserCallbackDispatcher
(00034A7A) USER32.dll.SendMessageW
(00068881) COMCTL32.DLL
(00028892) COMCTL32.DLL
(00028767) COMCTL32.DLL
(0003EC58) COMCTL32.DLL
(00040099) USER32.dll
(00037055) USER32.dll
(00036732) USER32.dll
(000348D6) USER32.dll.CallWindowProcW
(002804F2) Vcl::Controls::TWinControl::DefaultHandler
(002803E1) Vcl::Controls::TWinControl::WndProc
(002B6732) Vcl::Comctrls::TCustomTreeView::WndProc
(003C7B64) System::Classes::_18201
(00040099) USER32.dll
(00037055) USER32.dll
(00036C55) USER32.dll
(0003A81D) USER32.dll
(00073E7B) ntdll.dll.KiUserCallbackDispatcher
(00034A7A) USER32.dll.SendMessageW
(0038503B) Winapi::Commctrl::TreeView_SelectItem
(0046D3B9) Customdriveview::TCustomDriveView::CreateWnd
(0027F472) Vcl::Controls::TWinControl::CreateHandle
(0027B89D) Vcl::Controls::TControl::WndProc
(002803E1) Vcl::Controls::TWinControl::WndProc
(002B6732) Vcl::Comctrls::TCustomTreeView::WndProc
(0027F632) Vcl::Controls::TWinControl::RecreateWnd
(002803E1) Vcl::Controls::TWinControl::WndProc

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.1

Error message:
Invalid access to memory.

Stack trace:
(002B267B) Vcl::Comctrls::TTreeNode::GetTreeView
(000879EF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(0046FC44) Customdriveview::TCustomDriveView::IterateSubTree
(00482592) Driveview::TDriveView::ValidateDirectoryEx
(0046F8D5) Customdriveview::TCustomDriveView::ValidateDirectory
(00480155) Driveview::TDriveView::Change
(002B6EB2) Vcl::Comctrls::TCustomTreeView::CNNotify
(0046F3ED) Customdriveview::TCustomDriveView::CNNotify
(00280E1D) Vcl::Controls::TWinControl::WndProc
(002B716E) Vcl::Comctrls::TCustomTreeView::WndProc
(00280F83) Vcl::Controls::_17076
(00280E1D) Vcl::Controls::TWinControl::WndProc
(00280464) Vcl::Controls::TWinControl::MainWndProc
(003C85A0) System::Classes::_18201
(00040109) USER32.dll
(000370C5) USER32.dll
(00036CC5) USER32.dll
(0003A88D) USER32.dll
(00073E9B) ntdll.dll.KiUserCallbackDispatcher
(00034AEA) USER32.dll.SendMessageW
(00068881) COMCTL32.DLL
(00028892) COMCTL32.DLL
(00028767) COMCTL32.DLL
(0003EC58) COMCTL32.DLL
(00040109) USER32.dll
(000370C5) USER32.dll
(000367A2) USER32.dll
(00034946) USER32.dll.CallWindowProcW
(00280F2E) Vcl::Controls::TWinControl::DefaultHandler
(00280E1D) Vcl::Controls::TWinControl::WndProc
(002B716E) Vcl::Comctrls::TCustomTreeView::WndProc
(003C85A0) System::Classes::_18201
(00040109) USER32.dll
(000370C5) USER32.dll
(00036CC5) USER32.dll
(0003A88D) USER32.dll
(00073E9B) ntdll.dll.KiUserCallbackDispatcher
(00034AEA) USER32.dll.SendMessageW
(00385A77) Winapi::Commctrl::TreeView_SelectItem
(0046E34D) Customdriveview::TCustomDriveView::CreateWnd
(0027FEAE) Vcl::Controls::TWinControl::CreateHandle
(0027C2D9) Vcl::Controls::TControl::WndProc
(00280E1D) Vcl::Controls::TWinControl::WndProc
(002B716E) Vcl::Comctrls::TCustomTreeView::WndProc
(0028006E) Vcl::Controls::TWinControl::RecreateWnd
(00280E1D) Vcl::Controls::TWinControl::WndProc

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21

Error message:
Acceso a memoria no válido

Traza de la pila:
(002B260B) Vcl::Comctrls::TTreeNode::GetTreeView
(00097FCF) ntdll.dll
(000761E1) ntdll.dll.KiUserExceptionDispatcher
(0046FB45) Customdriveview::_16446
(0046FB45) Customdriveview::_16446
(0046FBD4) Customdriveview::TCustomDriveView::IterateSubTree
(00482522) Driveview::TDriveView::ValidateDirectoryEx
(0046F865) Customdriveview::TCustomDriveView::ValidateDirectory
(00257837) Vcl::Extctrls::TTimer::Timer
(003C8530) System::Classes::_18201
(00046C90) USER32.dll
(00026145) USER32.dll
(00024A73) USER32.dll
(000245AB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.19.6

Error message:
Invalid access to memory.

Stack trace:
(002B1C3F) Vcl::Comctrls::TTreeNode::GetTreeView
(000879EF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(0046ECB0) Customdriveview::TCustomDriveView::IterateSubTree
(0048120E) Driveview::TDriveView::ValidateDirectoryEx
(0046E941) Customdriveview::TCustomDriveView::ValidateDirectory
(00256E6B) Vcl::Extctrls::TTimer::Timer
(003C7B64) System::Classes::_18201
(00040109) USER32.dll
(000370C5) USER32.dll
(00034E35) USER32.dll
(00034BFB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

Happened when the app was sitting in the background.

WinSCP 5.19.6

Error message:
Invalid access to memory.

Stack trace:
(002B1C3F) Vcl::Comctrls::TTreeNode::GetTreeView
(00097FCF) ntdll.dll
(000761E1) ntdll.dll.KiUserExceptionDispatcher
(0046EC21) Customdriveview::_16446
(0046EC21) Customdriveview::_16446
(0046EC21) Customdriveview::_16446
(0046EC21) Customdriveview::_16446
(0046ECB0) Customdriveview::TCustomDriveView::IterateSubTree
(0048120E) Driveview::TDriveView::ValidateDirectoryEx
(0046E941) Customdriveview::TCustomDriveView::ValidateDirectory
(00256E6B) Vcl::Extctrls::TTimer::Timer
(003C7B64) System::Classes::_18201
(00046C90) USER32.dll
(00026145) USER32.dll
(00024A73) USER32.dll
(000245AB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.19.6

Error message:
Invalid access to memory.

Stack trace:
(002B1C3F) Vcl::Comctrls::TTreeNode::GetTreeView
(00088FCF) ntdll.dll
(00074221) ntdll.dll.KiUserExceptionDispatcher
(0046EC21) Customdriveview::_16446
(0046ECB0) Customdriveview::TCustomDriveView::IterateSubTree
(0048120E) Driveview::TDriveView::ValidateDirectoryEx
(0046E941) Customdriveview::TCustomDriveView::ValidateDirectory
(00256E6B) Vcl::Extctrls::TTimer::Timer
(003C7B64) System::Classes::_18201
(00043719) USER32.dll
(00024257) USER32.dll
(000233A9) USER32.dll
(0002318B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

Happened while laptop went into or out of hibernate (or suspend)

WinSCP 5.21.1

Error message:
Invalid access to memory.

Stack trace:
(002B267B) Vcl::Comctrls::TTreeNode::GetTreeView
(00097FCF) ntdll.dll
(000761E1) ntdll.dll.KiUserExceptionDispatcher
(0046FBB5) Customdriveview::_16446
(0046FBB5) Customdriveview::_16446
(0046FBB5) Customdriveview::_16446
(0046FBB5) Customdriveview::_16446
(0046FC44) Customdriveview::TCustomDriveView::IterateSubTree
(00482592) Driveview::TDriveView::ValidateDirectoryEx
(0046F8D5) Customdriveview::TCustomDriveView::ValidateDirectory
(002578A7) Vcl::Extctrls::TTimer::Timer
(003C85A0) System::Classes::_18201
(00046C90) USER32.dll
(00026145) USER32.dll
(00024A73) USER32.dll
(000245AB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.19.5

Error message:
Invalid access to memory.

Stack trace:
(002B1C3F) Vcl::Comctrls::TTreeNode::GetTreeView
(000879EF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(0046ECB0) Customdriveview::TCustomDriveView::IterateSubTree
(0048120E) Driveview::TDriveView::ValidateDirectoryEx
(0046E941) Customdriveview::TCustomDriveView::ValidateDirectory
(0047EEB9) Driveview::TDriveView::Change
(002B6476) Vcl::Comctrls::TCustomTreeView::CNNotify
(0046E459) Customdriveview::TCustomDriveView::CNNotify
(002803E1) Vcl::Controls::TWinControl::WndProc
(002B6732) Vcl::Comctrls::TCustomTreeView::WndProc
(00280547) Vcl::Controls::_17076
(002803E1) Vcl::Controls::TWinControl::WndProc
(0027FA28) Vcl::Controls::TWinControl::MainWndProc
(003C7B64) System::Classes::_18201
(00040109) USER32.dll
(000370C5) USER32.dll
(00036CC5) USER32.dll
(0003A88D) USER32.dll
(00073E9B) ntdll.dll.KiUserCallbackDispatcher
(00034AEA) USER32.dll.SendMessageW
(00068881) COMCTL32.DLL
(00028892) COMCTL32.DLL
(00028767) COMCTL32.DLL
(0003EC58) COMCTL32.DLL
(00040109) USER32.dll
(000370C5) USER32.dll
(000367A2) USER32.dll
(00034946) USER32.dll.CallWindowProcW
(002804F2) Vcl::Controls::TWinControl::DefaultHandler
(002803E1) Vcl::Controls::TWinControl::WndProc
(002B6732) Vcl::Comctrls::TCustomTreeView::WndProc
(003C7B64) System::Classes::_18201
(00040109) USER32.dll
(000370C5) USER32.dll
(00036CC5) USER32.dll
(0003A88D) USER32.dll
(00073E9B) ntdll.dll.KiUserCallbackDispatcher
(00034AEA) USER32.dll.SendMessageW
(0038503B) Winapi::Commctrl::TreeView_SelectItem
(0046D3B9) Customdriveview::TCustomDriveView::CreateWnd
(0027F472) Vcl::Controls::TWinControl::CreateHandle
(0027B89D) Vcl::Controls::TControl::WndProc
(002803E1) Vcl::Controls::TWinControl::WndProc
(002B6732) Vcl::Comctrls::TCustomTreeView::WndProc
(0027F632) Vcl::Controls::TWinControl::RecreateWnd
(002803E1) Vcl::Controls::TWinControl::WndProc

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.19.6

Error message:
Nieprawidłowy dostęp do pamięci.

Stack trace:
(002B1C3F) Vcl::Comctrls::TTreeNode::GetTreeView
(0007DAFF) ntdll.dll
(0006B711) ntdll.dll.KiUserExceptionDispatcher
(0046ECB0) Customdriveview::TCustomDriveView::IterateSubTree
(0048120E) Driveview::TDriveView::ValidateDirectoryEx
(0046E941) Customdriveview::TCustomDriveView::ValidateDirectory
(00256E6B) Vcl::Extctrls::TTimer::Timer
(003C7B64) System::Classes::_18201
(0003AE69) USER32.dll
(00037335) USER32.dll
(00036BE9) USER32.dll
(000369CB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.1

Error message:
Nieprawidłowy dostęp do pamięci.

Stack trace:
(002B267B) Vcl::Comctrls::TTreeNode::GetTreeView
(0008225F) ntdll.dll
(0006FDBA) ntdll.dll.KiUserExceptionDispatcher
(0046FC44) Customdriveview::TCustomDriveView::IterateSubTree
(00482592) Driveview::TDriveView::ValidateDirectoryEx
(0046F8D5) Customdriveview::TCustomDriveView::ValidateDirectory
(002578A7) Vcl::Extctrls::TTimer::Timer
(003C85A0) System::Classes::_18201
(0002C2D1) USER32.dll
(0000C305) USER32.dll
(0000BC4F) USER32.dll
(0000BA0B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.