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 5.7.4

Error message:
Invalid access to memory.

Stack trace:
(0070E490)
(0005A67A) ntdll.dll
(0000F15E) ntdll.dll.KiUserExceptionDispatcher
(0038210C)
(00169C22)
(001DBA8A)
(001DBB08)