I've had this very same problem. When I updated my dash to the new build, I neglected to delete ALL the files for XBMC (and forgot to format my 400GB into 32kb clusters which was another problem all together).
Not sure about other bios, but on my x3, i can ftp via bios and delete ALL files. I did this and deleted my tdata folder (on the e drive) and everything was good to go.
and ALWAYS make sure you BACKUP, otherwise you'll be SOL if you lost 120 games plus thousands of emulaters, some movies and some music (which is what happened to me cos n0Ob me didn't format in 32kb clusters) lol
This post has been edited by Electric Jiggalo: Jun 20 2006, 06:32 AM