invalid drive letter

Hello,

When I try to start op WinSCP I receive the message
/ is a invalid drive letter.

Click away the message and a incomplete WinSCP screen is shown. Both left screen and right screen are empty.

This happens after I filled in the login information.
The PC's of my collegeaus do not have this problem.

Does anyone have any clue what can be wrong?

Thanks for yiour support at forehand and greetings

Where is located your Windows Document folder? Does it help if you type some path to Local directory box on Environment tab of login dialog?