Lost Ability To Upload

I downloaded the latest smartFTP build today, and now I'm experiencing a problem. I uploaded a bunch of files normally, and then it just ... quit. I can't drag-and-drop, the queue won't work, and the "upload" in the commands is greyed out. I am connected and logged in. In all my time using smartFTP I've never had a problem quite like this!

Any and all help, information, etc. would be appreciated!

It's still not working. I uninstalled and re-installed and restarted the computer, and no luck. No files will upload at all with SmartFTP.

If you expect us to be able to help, post the Help -> About system info, the log and more details about how you upload (direct, queue) ...