I tried the latest beta version and it worked great until today, I noticed that the XP taskbar was stuck and not responding at all. Tried restarting Parallels - same thing. I decided this was a bug in the beta version, so I uninstalled Parallels, downloaded the latest official release, and tried to reinstall. During the installation, I got an error message saying that there is nothing to install. (this is after another message that there is a newer version - is it OK to install?) What's going on?