My WinSCP is constantly crashing, I think it could be because some kind of loop, that crashes it,
Can you send me an email, so I can send you back a debug version of WinSCP to track the problem? Please include link back to this topic in your email. Also note in this topic that you have sent the email. Thanks.
Also when selecting files on both, local and remote server it's very difficult to deselect (or at least get rid of the blue background of selected files) unless you go back a directory and in again they always keep staying selected.
What version of WinSCP are you using?
Have you read this FAQ?