Invalid access to memory - TTerminalManager::TerminalPromptUser

<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 5.7.5

Error message:
Invalid access to memory.

Stack trace:
(0005A5DA) ntdll.dll
(0000F12E) ntdll.dll.KiUserExceptionDispatcher
(00077A5F) TTerminalManager::TerminalPromptUser
(006752AD) TPromptUserAction::Execute
(00672925) TQueueItemProxy::ProcessUserAction
(00014E32) TCustomScpExplorerForm::UserActionTimer
(001F2E27) Vcl::Extctrls::TTimer::Timer
(0034021C) 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 5.11.1

Error message:
Naruszenie ochrony pamęci.

Stack trace:
(00094AEA) TTerminalManager::TerminalPromptUser
(00088DEF) ntdll.dll
(0006FCE1) ntdll.dll.KiUserExceptionDispatcher
(006E3C35) TPromptUserAction::Execute
(006E0A05) TQueueItemProxy::ProcessUserAction
(000173F6) TCustomScpExplorerForm::UserActionTimer
(0022E62B) Vcl::Extctrls::TTimer::Timer
(0037BB94) System::Classes::_18201
(0001D0B9) USER32.dll
(00027844) USER32.dll
(0002A140) USER32.dll
(000180D7) USER32.dll
(00017C1B) 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.

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 5.13.7

Error message:
Ошибка доступа к памяти.

Трассировка стека:
(0006248E) ntdll.dll
(0000F15E) ntdll.dll.KiUserExceptionDispatcher
(00097A11) TTerminalManager::TerminalPromptUser
(006F5075) TPromptUserAction::Execute
(006F1B71) TQueueItemProxy::ProcessUserAction
(0001787E) TCustomScpExplorerForm::UserActionTimer
(002327DB) Vcl::Extctrls::TTimer::Timer
(0038109C) 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 5.19.3

Error message:
Invalid access to memory.

Stack trace:
(000B1D63) TTerminalManager::TerminalPromptUser
(000878AF) ntdll.dll
(00073EE1) ntdll.dll.KiUserExceptionDispatcher
(00CF7E6D) TPromptUserAction::Execute
(00CF4765) TQueueItemProxy::ProcessUserAction
(000192D2) TCustomScpExplorerForm::UserActionTimer
(00256D9F) Vcl::Extctrls::TTimer::Timer
(003C7A98) System::Classes::_18201
(00042489) USER32.dll
(00039425) USER32.dll
(00037195) USER32.dll
(00036F5B) 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:
(000B4D5F) TTerminalManager::TerminalPromptUser
(00097C6F) ntdll.dll
(00077BA1) ntdll.dll.KiUserExceptionDispatcher
(00D079AD) TPromptUserAction::Execute
(00D042A5) TQueueItemProxy::ProcessUserAction
(0001A2E2) TCustomScpExplorerForm::UserActionTimer
(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.