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 5.7.1
Error message:
Invalid access to memory.
Stack trace:
[00B1EC97]
[77BE007E] ntdll.dll.ZwWow64CallFunction64
[77BE07FA] ntdll.dll.KiUserExceptionDispatcher
[00CAED8C]
[00CC046B]
[00CAEA5D]
[00AC3313]
[00C10708]
[75EC8E6F] USER32.DLL.CallNextHookEx
[75EC90CC] USER32.DLL
[75ECA66A] USER32.DLL
[75ECA6DB] USER32.DLL.DispatchMessageW
Status: symbol_unknown