@yeqianzhong0313: 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 6.5.4

Error message:
无效的内存访问。

Stack trace:
(FFFFF002)WinSCP.exe
(000B332F) ntdll.dll

Status: all_insignificant





usually happens when I browse molecular dynamics task files(task on running and the file is written frequently)

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.