can t add files wmp11

I cannot add files to WMP11 in Vista Beta 2. I have tried to add folders for it to monitor as well as dragging and dropping folders. I have the same problem with videos and photos. It is like the library in WMP11 doesn't remember anything. I drag a folder full of photos, and it analyzes all of them, but then nothing is added. They are all jpg format, all the songs are mp3 format. Does anybody have any idea why this is happening? This makes Media center useless as there are no files. I have even tried adding them through Media center, but they can't find anything. What am I doing wrong? I have looked for a wmdb file (similar to WMP9 or 10, but I can't seem to find it). I have Vista installed on a disk other than C. Does that matter