The game crashes during the 3rd mission when playing as the Mages.

Ah... it happened to me. Maybe nine times. After the ninth time, I was so annoyed that I promised myself that if this damn computer crashed again, I would smash it against the wall (just kidding), but... it helped. I don't know how it happened... Maybe it will go away on its own, even if the patch doesn't help!!!
And maybe it's better to start over....