I'm in Windows 7 (running 32-bit, tho i have a 64-bit CPU), and I can't even install WinSCP while trying to "Run as Admin". I thought maybe it was just a current version thing, but it I couldn't get ANY version of WinSCP to install, even while using administrative rights (only tried Versions 3+).
Current versions give me a language selector, and then immediately throw me an ambiguous "Access Is Denied" error. Older version let me choose a few more options before giving me similar denial messages.
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.