I had the same problem. its a broken backup file! I installed an older backup and everything worked. \

BY THE WAY!! it has absolutely nothing to do with PR1.2 because i had this problem with both 1.1.1. before i installed 1.2 and still had the problem with the new 1.2 release.

Try an older backup and you will see it is working great! if you dont have an older backup... well... then your screwd...