Kings March crash [fixed with video card driver update]

A few days, it started to crash the game back to desktop with no error messages when I'm on the loading screen to enter Kings March.

It would load for about 5 seconds, stutter, freeze, then close game and I'm back to desktop.

Now I can't do it either by typing /kingsmarch or going through the king's hand.

Otherwise, mapping and other acts in the campaign is fine.

[edit] Fixed with video card driver update]