Unable to insert an item - Vcl::Comctrls::TTreeNodes::AddNode

<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 5.13.4

Error message:
Unable to insert an item

Stack trace:
(0028FA59) Vcl::Comctrls::TTreeNodes::AddNode
(0028F8A6) Vcl::Comctrls::TTreeNodes::AddChildObject
(00434557) Driveview::TDriveView::AddChildNode
(00435490) Driveview::TDriveView::CallBackValidateDir
(0042520D) Customdriveview::TCustomDriveView::IterateSubTree
(0043595F) Driveview::TDriveView::ValidateDirectoryEx
(00424EF5) Customdriveview::TCustomDriveView::ValidateDirectory
(0023245F) Vcl::Extctrls::TTimer::Timer
(00380D20) System::Classes::_18201
(000152F7) USER32.dll
(00015D35) USER32.dll
(000167BF) USER32.dll
(00016885) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

New PC, and new install. I have not been able to open the app. When I try to open, nothing appears. I can only see it on the task manager.

This error appear 10 minutes after opening.

<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 5.15.1

Error message:
Unable to insert an item

Stack trace:
(002ABC39) Vcl::Comctrls::TTreeNodes::AddNode
(002ABA86) Vcl::Comctrls::TTreeNodes::AddChildObject
(0045B46F) Driveview::TDriveView::AddChildNode
(0045C0C5) Driveview::TDriveView::ReadSubDirs
(0045C6A4) Driveview::TDriveView::CallBackValidateDir
(0044A29D) Customdriveview::TCustomDriveView::IterateSubTree
(0045CA0E) Driveview::TDriveView::ValidateDirectoryEx
(00449FA9) Customdriveview::TCustomDriveView::ValidateDirectory
(0045BDC5) Driveview::TDriveView::FindNodeToPath
(0045D8B5) Driveview::TDriveView::FindPathNode
(0044A436) Customdriveview::TCustomDriveView::SetDirectory
(0045D962) Driveview::TDriveView::SetDirectory
(0044DA6D) Dirview::TDirView::SetPath
(004527A7) Dirview::TDirView::ExecuteHomeDirectory
(0004C70E) TScpCommanderForm::LocalDefaultDirectory
(0004C400) TScpCommanderForm::StartingDisconnected
(00027477) TCustomScpExplorerForm::CMShowingChanged
(00027306) TCustomScpExplorerForm::Dispatch
(00278809) Vcl::Controls::TWinControl::WndProc
(00232CD0) Vcl::Forms::TCustomForm::WndProc
(008C441C) Vclcommon::C2838_0

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.

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.

It takes up to 2 hours for the app to open after I click it. It does not open immediately.<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.15.1

Error message:
Invalid access to memory.

Stack trace:
(002ABC39) Vcl::Comctrls::TTreeNodes::AddNode
(002ABA86) Vcl::Comctrls::TTreeNodes::AddChildObject
(0045B46F) Driveview::TDriveView::AddChildNode
(0045C0C5) Driveview::TDriveView::ReadSubDirs
(0045A25A) Driveview::TDriveView::CanExpand
(002AA55A) Vcl::Comctrls::TTreeNode::DoCanExpand
(002AA6C0) Vcl::Comctrls::TTreeNode::Expand
(002AE89E) Vcl::Comctrls::TCustomTreeView::CNNotify
(00449B01) Customdriveview::TCustomDriveView::CNNotify
(00278809) Vcl::Controls::TWinControl::WndProc
(002AEB5A) Vcl::Comctrls::TCustomTreeView::WndProc
(0027896F) Vcl::Controls::_17076
(00278809) Vcl::Controls::TWinControl::WndProc
(00277E50) Vcl::Controls::TWinControl::MainWndProc
(003A346C) System::Classes::_18201
(000324B9) USER32.dll
(0002490E) USER32.dll
(00024565) USER32.dll
(0002E547) USER32.dll
(00073A1B) ntdll.dll.KiUserCallbackDispatcher
(000100DA) USER32.dll.SendMessageW
(0006BD06) COMCTL32.dll
(0002A1BA) COMCTL32.dll
(0002A08E) COMCTL32.dll
(00025C1F) COMCTL32.dll
(000324B9) USER32.dll
(0002490E) USER32.dll
(0001A382) USER32.dll.CallWindowProcW
(0027891A) Vcl::Controls::TWinControl::DefaultHandler
(00278809) Vcl::Controls::TWinControl::WndProc
(002AEB5A) Vcl::Comctrls::TCustomTreeView::WndProc
(003A346C) System::Classes::_18201
(000324B9) USER32.dll
(0002490E) USER32.dll
(0001A382) USER32.dll.CallWindowProcW
(0047A29F) Dragdrop::TDragDr

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.

Thanks for your report.
I have sent you an email 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 5.17.6

Error message:
Unable to insert an item

Stack trace:
(002AD295) Vcl::Comctrls::TTreeNodes::AddNode
(002AD0E2) Vcl::Comctrls::TTreeNodes::AddChildObject
(0045CE08) Driveview::TDriveView::AddChildNode
(0045DE39) Driveview::TDriveView::CallBackValidateDir
(0044BBE5) Customdriveview::_16446
(0044BC05) Customdriveview::_16446
(0044BC05) Customdriveview::_16446
(0044BC94) Customdriveview::TCustomDriveView::IterateSubTree
(0045E3CA) Driveview::TDriveView::ValidateDirectoryEx
(0044B925) Customdriveview::TCustomDriveView::ValidateDirectory
(002508EF) Vcl::Extctrls::TTimer::Timer
(003A4AC8) System::Classes::_18201
(000434B9) USER32.dll
(00023FF7) USER32.dll
(00023149) USER32.dll
(00022F2B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.