Have been able to solve this problem. It is a known bug in SCCM RC1 and also Final. Microsoft Beta Engineer got a solution for me:
As soon as you dettach an reattach the sccm database in sql, two properties are changed, and sccm isn't able to do certain operations, as importing drivers, or applications.
Run this query against you db: ALTER DATABASE CM_SAG SET TRUSTWORTHY ON
Also verify, that SA is still the owner of the database. And that was it!
Thanks anyway