has issued another hotfix for Crusader Kings II
, fixing an issue with the regency events and numerous typos in the database and event files. Also, when you press the claim of a vassal ruler, he should now remain your vassal, and kKingdoms that are not previously de jure part of an empire can now also be assimilated.
A playable demo can be found here
Update: the patch is now locally mirrored (thanks: The Patches Scrolls