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)>
This error occurs on my linux machine once I login to a session. Error message reads "Invalid Access to Memory"
WinSCP 5.17

Error message:
External exception 80000101

Stack trace:
(F7FA6939)WinSCP.exe
(00070932)ntdll.dll
(000733EE)ntdll.dll
(00073B46)ntdll.dll

Status: all_insignificant

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.