Kovi: If I'm correct your character must know how to break the curse (by burying the twelve skeletons in the Blutenreich tomb) which is an information he receives from Balthazar (in the Burton's inn in SW Alvaron).
This note says: "Baron Dawn von Blutenreich was apparently cursed by his last wife, Miriam, for the alleged murders of his twelve former wives and their children. According to the tenets of the curse upon him, his unclean spirit shall haunt the Von Blutenreich family estate until the remains of his victims have been buried in a family grave."
tecknomage: Read my post carefully. I have the 12 wives' skeletons, I'm at the tomb.
I'm asking
HOW to bury them. Talking to the tomb and clicking the text has no results.
Yup, I read your post carefully and I know that you have all twelve wives, but read my post carefully. It is your character who must know that he can break the curse by burying the wives in that tomb. If he doesn't know it, the game won't allow you to do that. And your character can learn that by discussing it with Balthazar - which will write a note stated above into your Journal. Only after that you will be able to bury the wives by talking to the tomb.
That means, if you don't have the above note in your Journal, you can't bury the wives by talking to the tomb. Just check your Journal, and if it's not in there, go talk to Balthazar.
But one more thing - if you click on the tomb now, what does it say exactly?