martin wrote:

Thanks for your response. So you cannot reproduce the error?

No, I was not able to reproduce.

Thanks for your response. So you cannot reproduce the error?

This error occurs when the physical memory space, a random error.
As a result of the test in 10 times, the error did not occur again.

Thanks for your report.
I have sent you an email with a debug version of WinSCP to 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 5.7

Error message:
메모리 접근이 잘못 되었습니다.

스택 추적:
[00AB7F61]
[7725B466] ntdll.dll
[7721012E] ntdll.dll.KiUserExceptionDispatcher
[00AB8185]
[00AFC134]
[00AFED4A]
[00AFEADD]
[00B07D52]
[00A07062]
[0064343E]
[007CE591]
[0060C755]
[006436FA]
[0060C8BB]
[0060C755]
[0060BD9C]
[00730678]
[74C362F7] USER32.dll
[74C36D35] USER32.dll
[74C36DE3] USER32.dll
[74C36E41] USER32.dll
[77210107] ntdll.dll.KiUserCallbackDispatcher
[74C396C0] USER32.dll.SendMessageW
[70D2C057] COMCTL32.DLL
[70DA94CF] COMCTL32.DLL
[70DA885B] COMCTL32.DLL
[70D4C2FF] COMCTL32.DLL
[70D4C21A] COMCTL32.DLL
[74C362F7] USER32.dll
[74C36D35] USER32.dll
[74C40D22] USER32.dll
[74C40D48] USER32.dll.CallWindowProcW
[0060C866]
[007CE5F1]
[00730678]
[74C362F7] USER32.dll
[74C36D35] USER32.dll
[74C40D22] USER32.dll
[74C40D48] USER32.dll.CallWindowProcW
[007EF24F]
[00730678]
[74C362F7] USER32.dll
[74C36D35] USER32.dll
[74C377BF] USER32.dll
[74C37885] USER32.dll.DispatchMessageW