Hmm.. I don't know the cause or anything, been searching the net for a while but can't get any info.. Doesn't seem like a lot of people get this error, or atleast they don't report it. Uhm.. Do you know if the older build is registerable with a key? Can't get this to work.
EDIT: Working now. I had to use my WinXP disk to format the drive and then tried a fresh install of Windows7 all over, after formatting with the WinXP disk. Only different thing I did this time was to leave the languages at english, rather than changing to faroese. Not sure if this has been the cause of the error, but I thought leaving everything at default would get me better chances at succeeding. Up and running now and must honestly say I'm impressed by the beta.