Upload Problem Vista and SmartFTP 3.0

Hi, I just bought SmartFTP and installed 3.0 on a Vista Laptop. I can't upload any files to any servers. I see there is a great deal of discussion about this problem on the forums, but it sounds like the problem is supposed to be resolved for Vista in the version 3.0. It did not work and I had to uninstall and regress to version 2.5. I'd like to get the v3.0 which I paid for, working if possible.

Can you offer any assistance on making this work or troubleshooting?

Thanks for your help!