Invalid access to memory - TScpCommanderForm::UpdateTerminal

<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)>

Happened when closing the connection dialog box. I had been on VPN at home and disconnected, causing the dialog to come up for my existing session. I then connected to my office network at the office, and closed the dialog. Error resulted.

WinSCP 5.13.1

Error message:
Invalid access to memory.

Stack trace:
(00110D70)
(008BA3F6) C5101_0
(008BC45E) ____ExceptionHandler
(008B9218) __ExceptionHandler
(0006248E) ntdll.dll
(0000F15E) ntdll.dll.KiUserExceptionDispatcher
(000417DF) TScpCommanderForm::UpdateTerminal
(00005D6C) TCustomScpExplorerForm::TerminalChanging
(00094BF3) TTerminalManager::DoSetActiveTerminal
(00094B7E) TTerminalManager::SetActiveTerminal
(000940A3) TTerminalManager::FreeActiveTerminal
(00094892) TTerminalManager::ReconnectActiveTerminal
(000A31A9) ShowExtendedExceptionEx
(0001D614) TCustomScpExplorerForm::ShowExtendedException
(00095D91) TTerminalManager::TerminalShowExtendedException
(007B60E8) TTerminal::ShowExtendedException
(0021D95E) Vcl::Forms::TApplication::HandleException
(0037ED60) System::Classes::_18201
(000152F7) USER32.dll
(00015D35) USER32.dll
(000167BF) USER32.dll
(00016885) USER32.dll.DispatchMessageW

(00094986) TTerminalManager::FreeTerminal
(0006248E) ntdll.dll
(0000F15E) ntdll.dll.KiUserExceptionDispatcher
(000940A3) TTerminalManager::FreeActiveTerminal
(000A31A9) ShowExtendedExceptionEx
(0001D614) TCustomScpExplorerForm::ShowExtendedException
(00095D91) TTerminalManager::TerminalShowExtendedException
(007B60E8) TTerminal::ShowExtendedException
(0021D95E) Vcl::Forms::TApplication::HandleException
(0037ED60) System::Classes::_18201
(000152F7) USER32.dll
(00015D35) USER32.dll
(000167BF) USER32.dll
(00016885) USER32.dll.DispatchMessageW

(00361CDD) System::Classes::TList%3

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 5.13.3

Error message:
Invalid access to memory.

Stack trace:
(008BC4D6) __DynamicCastVCLptr
(008BCA5A) C5104_0
(008BEAC2) ____ExceptionHandler
(008BB87C) __ExceptionHandler
(00062496) ntdll.dll
(0000F13E) ntdll.dll.KiUserExceptionDispatcher
(0004265F) TScpCommanderForm::UpdateTerminal
(00005E00) TCustomScpExplorerForm::TerminalChanging
(000048DA) TCustomScpExplorerForm::~TCustomScpExplorerForm
(0004200E) TScpCommanderForm::~TScpCommanderForm
(000E3AC3) Execute
(000024B4) wWinMain
(008BAA91) C4972_0
(000388F0) ntdll.dll
(000388C0) ntdll.dll

(00259B30) Vcl::Controls::TWinControl::CreateWnd
(0029C3D3) Vcl::Comctrls::TCustomListView::CreateWnd
(004071FA) Nortonlikelistview::TCustomNortonLikeListView::CreateWnd
(004035D5) Ielistview::TCustomIEListView::CreateWnd
(0029ADD9) Vcl::Comctrls::TListItems::BeginUpdate
(0041C8E7) Customdirview::TCustomDirView::ClearItems
(00679A43) TUnixDirView::SetTerminal

(00259B30) Vcl::Controls::TWinControl::CreateWnd
(0025A0B6) Vcl::Controls::TWinControl::CreateHandle
(0048EC5F) Tbxstatusbars::TTBXCustomStatusBar::UpdatePanels
(00047EC4) TScpCommanderForm::RemoteDirViewUpdateStatusBar
(00679A43) TUnixDirView::SetTerminal

(003F08F0) System::TObject::FreeInstance

(000392D1) ntdll.dll
(00062496) ntdll.dll
(0000F13E) ntdll.dll.KiUserExceptionDispatcher
(00039354) ntdll.dll.RtlDosPathNameToRelativeNtPathName_U_WithStatus
(00018CDF) KERNELBASE.dll.GetFileAttributesExW
(003CBD5E) System::Sysutils::_16838
(003CBE7A)%

The problem happens rarely. I cannot reproduce it.

I was just trying to close WinSCP but hitting the red X from the new session screen. This happens from time to time - since an ugprade a few months ago.

WinSCP 5.13.4

Error message:
Invalid access to memory.

Stack trace:
(00069CC0)
(008BDC8E) C5104_3
(008BFCF6) ____ExceptionHandler
(008BCAB0) __ExceptionHandler
(00089B5F) ntdll.dll
(00070A21) ntdll.dll.KiUserExceptionDispatcher
(0004265F) TScpCommanderForm::UpdateTerminal
(00005E00) TCustomScpExplorerForm::TerminalChanging
(000967CB) TTerminalManager::DoSetActiveTerminal
(00096756) TTerminalManager::SetActiveTerminal
(00095C9F) TTerminalManager::FreeActiveTerminal
(0009646A) TTerminalManager::ReconnectActiveTerminal
(000A4DE5) ShowExtendedExceptionEx
(0001D6F4) TCustomScpExplorerForm::ShowExtendedException
(00097969) TTerminalManager::TerminalShowExtendedException
(007B94BC) TTerminal::ShowExtendedException
(0021F91E) Vcl::Forms::TApplication::HandleException
(00380D20) System::Classes::_18201
(0001D0B9) USER32.dll
(00027844) USER32.dll
(0002A140) USER32.dll
(000180D7) USER32.dll
(00017C1B) USER32.dll.DispatchMessageW

(0009655E) TTerminalManager::FreeTerminal
(00089B5F) ntdll.dll
(00070A21) ntdll.dll.KiUserExceptionDispatcher
(00095C9F) TTerminalManager::FreeActiveTerminal
(000A4DE5) ShowExtendedExceptionEx
(0001D6F4) TCustomScpExplorerForm::ShowExtendedException
(00097969) TTerminalManager::TerminalShowExtendedException
(007B94BC) TTerminal::ShowExtendedException
(0021F91E) Vcl::Forms::TApplication::HandleException
(00380D20) System::Classes::_18201
(0001D0B9) USER32.dll
(00027844) USER32.dll
(0002A140) USER32.dll
(000180D7) USER32.dll
(00017C1B) USER32.dll.DispatchMessageW

(00363C9D) System::Classes::TList::Get
(00363C9D) System::Classes::TList::Get
(00095C9F) TTerminalManager::FreeActiveTerminal
(000A4DE5) ShowExtendedExceptionEx
(0001D6F4) TCustomScpExplorerForm::ShowExtendedException
(00097969) TTerminalManager::TerminalShowExtendedException
(007B94BC) TTerminal::ShowExtendedException
(0021F91E) Vcl::Forms::TApplication::HandleException
(00380D20) System::Classes::_18201
(0001D0B9) USER32.dll
(00027844) USER32.dll
(0002A140) USER32.dll
(000180D7) USER32.dll
(00017C1B) USER32.dll.DispatchMessageW

(003F24CC) System::HandleAnyException
(00089B5F) ntdll.dll
(00070A21) ntdll.dll.KiUserExceptionDispatcher
(00380D20) System::Classes::_18201
(0001D0B9) USER32.dll
(00027844) USER32.dll
(0002A140) USER32.dll
(000180D7) USER32.dll
(00017C1B) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.

I clicked cancel on a login dialog that had been open for a few hours.

WinSCP 5.13.4

Error message:
Invalid access to memory.

Stack trace:
(008BDC8E) C5104_3
(008BFCF6) ____ExceptionHandler
(008BCAB0) __ExceptionHandler
(0007DAFF) ntdll.dll
(0006B711) ntdll.dll.KiUserExceptionDispatcher
(0004265F) TScpCommanderForm::UpdateTerminal
(00005E00) TCustomScpExplorerForm::TerminalChanging
(000967CB) TTerminalManager::DoSetActiveTerminal
(00096756) TTerminalManager::SetActiveTerminal
(00095C9F) TTerminalManager::FreeActiveTerminal
(0009646A) TTerminalManager::ReconnectActiveTerminal
(000A4DE5) ShowExtendedExceptionEx
(0001D6F4) TCustomScpExplorerForm::ShowExtendedException
(00097969) TTerminalManager::TerminalShowExtendedException
(007B94BC) TTerminal::ShowExtendedException
(0021F91E) Vcl::Forms::TApplication::HandleException
(00380D20) System::Classes::_18201
(0003AE69) USER32.dll
(00037335) USER32.dll
(00036BE9) USER32.dll
(000369CB) USER32.dll.DispatchMessageW

(0009655E) TTerminalManager::FreeTerminal
(0007DAFF) ntdll.dll
(0006B711) ntdll.dll.KiUserExceptionDispatcher
(00095C9F) TTerminalManager::FreeActiveTerminal
(000A4DE5) ShowExtendedExceptionEx
(0001D6F4) TCustomScpExplorerForm::ShowExtendedException
(00097969) TTerminalManager::TerminalShowExtendedException
(007B94BC) TTerminal::ShowExtendedException
(0021F91E) Vcl::Forms::TApplication::HandleException
(00380D20) System::Classes::_18201
(0003AE69) USER32.dll
(00037335) USER32.dll
(00036BE9) USER32.dll
(000369CB) USER32.dll.DispatchMessageW

(00363C9D) System::Classes::TList::Get
(00363C9D) System::Classes::TList::Get
(00095C9F) TTerminalManager::FreeActiveTerminal
(000A4DE5) ShowExtendedExceptionEx
(0001D6F4) TCustomScpExplorerForm::ShowExtendedException
(00097969) TTerminalManager::TerminalShowExtendedException
(007B94BC) TTerminal::ShowExtendedException
(0021F91E) Vcl::Forms::TApplication::HandleException
(00380D20) System::Classes::_18201
(0003AE69) USER32.dll
(00037335) USER32.dll
(00036BE9) USER32.dll
(000369CB) USER32.dll.DispatchMessageW

(003F24CC) System::HandleAnyException
(0007DAFF) ntdll.dll
(0006B711) ntdll.dll.KiUserExceptionDispatcher
(00380D20) 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 5.13.4

Error message:
Ongeldige toegang tot geheugen.

Stack trace:
(0006E6B0)
(008BDC8E) C5104_3
(008BFCF6) ____ExceptionHandler
(008BCAB0) __ExceptionHandler
(0007DAFF) ntdll.dll
(0006B711) ntdll.dll.KiUserExceptionDispatcher
(0004265F) TScpCommanderForm::UpdateTerminal
(00005E00) TCustomScpExplorerForm::TerminalChanging
(000967CB) TTerminalManager::DoSetActiveTerminal
(00096756) TTerminalManager::SetActiveTerminal
(00095C9F) TTerminalManager::FreeActiveTerminal
(0009646A) TTerminalManager::ReconnectActiveTerminal
(000A4DE5) ShowExtendedExceptionEx
(0001D6F4) TCustomScpExplorerForm::ShowExtendedException
(00097969) TTerminalManager::TerminalShowExtendedException
(007B94BC) TTerminal::ShowExtendedException
(0021F91E) Vcl::Forms::TApplication::HandleException
(00380D20) System::Classes::_18201
(0003AE69) USER32.dll
(00037335) USER32.dll
(00036BE9) USER32.dll
(000369CB) USER32.dll.DispatchMessageW

(0009655E) TTerminalManager::FreeTerminal
(0007DAFF) ntdll.dll
(0006B711) ntdll.dll.KiUserExceptionDispatcher
(00095C9F) TTerminalManager::FreeActiveTerminal
(000A4DE5) ShowExtendedExceptionEx
(0001D6F4) TCustomScpExplorerForm::ShowExtendedException
(00097969) TTerminalManager::TerminalShowExtendedException
(007B94BC) TTerminal::ShowExtendedException
(0021F91E) Vcl::Forms::TApplication::HandleException
(00380D20) System::Classes::_18201
(0003AE69) USER32.dll
(00037335) USER32.dll
(00036BE9) USER32.dll
(000369CB) USER32.dll.DispatchMessageW

(00363C9D) System::Classes::TList::Get
(00363C9D) System::Classes::TList::Get
(00095C9F) TTerminalManager::FreeActiveTerminal
(000A4DE5) ShowExtendedExceptionEx
(0001D6F4) TCustomScpExplorerForm::ShowExtendedException
(00097969) TTerminalManager::TerminalShowExtendedException
(007B94BC) TTerminal::ShowExtendedException
(0021F91E) Vcl::Forms::TApplication::HandleException
(00380D20) System::Classes::_18201
(0003AE69) USER32.dll
(00037335) USER32.dll
(00036BE9) USER32.dll
(000369CB) USER32.dll.DispatchMessageW

(003F24CC) System::HandleAnyException
(0007DAFF) ntdll.dll
(0006B711) ntdll.dll.KiUserExceptionDispatcher
(00380D20) System::Classes::_18201
(0003AE69) USER32.dll
(00037335) USER32.dll
(00036BE9) USER32.dll
(000369CB) USER32.dll.DispatchMessageW

The problem happens rarely. I cannot reproduce it.