I've had this problem as well and it is extremely frustrating. Are there any plans to release a bug fix for it?
I have to say that this is the most bug ridden game I've played in a very long time. I've had to restart from scratch 3 times because of problems with saved games. I'm now in the suituation where I've done the quests in the Acadamy (for the third time) and now my saved games (the last 4 of them) crash out as soon as I encounter any monster in the main game or in the battlefields. I'm about to give up on this game and any future games from Larian. It really isn't good enough given the quality of what we get from Black Isle et al.