Strider, for me it was the "Beta expired" message, yeah. I just unzipped the patch again and that really worked. You wrote that as if it was common knowledge :) I didn't know that. However, I don't think that's what the developer intends with the patch file.
Dylan, I hit the Login button manually without the demo asking me. However, now that I've apparently created an account every time I try to log in nothing happens. So that way I can't play.
The only other strange behavior I'm experiencing now is that I can't select music files. The topmost folder is selected and I can't select another one. This happened the first time, too. Though I don't remember how I got rid of it. Maybe I just restarted over and over again...
Anyway, that's probably a topic for the Bugs forum.