You can delete the update for now and it should work. I think.Alright Was the key changed just today? Yesterday I was still able to import the quests. Also I'm currently working on a small editor too.
It seems like the monster only spawns in one area, although I edited the area in the boss file. Is this intended by the game or am I doing something wrong? Anyways, have a nice vacation!
EDIT: Jup, they changed it..