Invalid access to memory - TRemoteFile::GetType

<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 5.9.5

Error message:
Invalid access to memory.

Stack trace:
(006D0BA0) TRemoteFile::GetType
(0086700E) C5073_3
(00869076) ____ExceptionHandler
(00865E30) __ExceptionHandler
(0003EF0E) ntdll.dll.ZwWow64CallFunction64
(0003F68A) ntdll.dll.KiUserExceptionDispatcher
(0077CCAB) TTerminal::MoveFileW
(00779701) TTerminal::ProcessFiles
(0077CE43) TTerminal::MoveFiles
(00014B52) TCustomScpExplorerForm::RemoteTransferFiles
(0000E8C7) TCustomScpExplorerForm::ExecuteFileOperation
(0000EAB8) TCustomScpExplorerForm::ExecuteFileOperation
(0000EB3F) TCustomScpExplorerForm::ExecuteFileOperationCommand
(00037870) TNonVisualDataModule::ExplorerActionsExecute
(003B5388) System::Actions::TContainedActionList::ExecuteAction
(0019C501) Vcl::Actnlist::TCustomAction::Execute
(0037326C) System::Classes::_18201
(00007E6F) USER32.DLL.CallNextHookEx
(000080CC) USER32.DLL
(0000966A) USER32.DLL
(000096DB) USER32.DLL.DispatchMessageW

(006D0BA0) TRemoteFile::GetType
(0086700E) C5073_3
(00869076) ____ExceptionHandler
(00865E30) __ExceptionHandler
(0003EF0E) ntdll.dll.ZwWow64CallFunction64
(0003F68A) ntdll.dll.KiUserExceptionDispatcher
(0077CCAB) TTerminal::MoveFileW
(00779701) TTerminal::ProcessFiles
(0077CE43) TTerminal::MoveFiles
(00014B52) TCustomScpExplorerForm::RemoteTransferFiles
(0000E8C7) TCustomScpExplorerForm::ExecuteFileOperation
(0000EAB8) TCustomScpExplorerForm::ExecuteFileOperation
(0000EB3F) TCustomScpExplorerForm::ExecuteFileOperationCommand
(00037870) TNonVisualDataModule::ExplorerActionsExecute
%

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.

martin wrote:

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.

Thank you Martin

<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 5.15.2

Error message:
Zugriffsverletzung - ungültiger Zugriff auf den Speicher.

Stack trace:
(0075866C) TRemoteFile::GetType
(0092709A) C5157_3
(00929102) ____ExceptionHandler
(00925EBC) __ExceptionHandler
(0006248E) ntdll.dll
(0000F15E) ntdll.dll.KiUserExceptionDispatcher
(0081E85C) TTerminal::DeleteFileW
(0081DC3F) TTerminal::ProcessFiles
(0081ED74) TTerminal::DeleteFiles
(00015D7B) TCustomScpExplorerForm::DeleteFiles
(000104F1) TCustomScpExplorerForm::ExecuteDeleteFileOperation
(000105AB) TCustomScpExplorerForm::ExecuteFileOperation
(0001073C) TCustomScpExplorerForm::ExecuteFileOperation
(000107C3) TCustomScpExplorerForm::ExecuteFileOperationCommand
(000422AE) TNonVisualDataModule::ExplorerActionsExecute
(003E75CC) System::Actions::TContainedActionList::ExecuteAction

(0075866C) TRemoteFile::GetType
(0092709A) C5157_3
(00929102) ____ExceptionHandler
(00925EBC) __ExceptionHandler
(0006248E) ntdll.dll
(0000F15E) ntdll.dll.KiUserExceptionDispatcher
(0081E85C) TTerminal::DeleteFileW
(0081DC3F) TTerminal::ProcessFiles
(0081ED74) TTerminal::DeleteFiles
(00015D7B) TCustomScpExplorerForm::DeleteFiles
(000104F1) TCustomScpExplorerForm::ExecuteDeleteFileOperation
(000105AB) TCustomScpExplorerForm::ExecuteFileOperation
(0001073C) TCustomScpExplorerForm::ExecuteFileOperation
(000107C3) TCustomScpExplorerForm::ExecuteFileOperationCommand
(000422AE) TNonVisualDataModule::ExplorerActionsExecute
(003E75CC) System::Actions::TContainedActionList::ExecuteAction

(00927705) C5157_3
(00928CDF) _ReTh

The problem happens rarely. I cannot reproduce it.