First go to folder options and make it so you can see all hidden files and folders then go and look for the following directory. C:\Users\(UserNAME)\AppData\Local\VirtualStore\Pro gram Files\Bearshare\db\ <- this is for vista on XP i guess its similar to that if you cant find it just use the search option on the start menu and type Bearshare, onece i found it i just deleted all files on the db folder and bearshare worked again.