I have sent a email from "349817649@QQ .com". Thanks again.
Before posting, please read how to report bug or request support effectively.
Bug reports without an attached log file are usually useless.
WinSCP process terminated with exit code 3. There was no output. Response log file C:\Windows\TEMP\wscp336E0.015864BD.tmp was not created. This could indicate lack of write permissions to the log folder or problems starting WinSCP itself.