Bought the downloadable version through Impulse. I'm having the same problems as have been reported here with the crash in the area with Josephine, and the spinning monks in the cathedral. Many other crashes at random points, most of which I could get around by reloading from a saved game.
I also hit a consistent crash when the Orc Leader attacks (in the far southeast of Rivertown).
Despite getting permission from the Dwarven King to enter the mines, when I move the mouse pointer over the cave entrance it highlights the entrance, but no amount of clicking on it will move my character into it. Similarly, I can't get down the staircase in the Warrior's Guild.
This is a very fun game, but with these crashes and the inability to enter the Dwarven mines, I can't make any further progress on the quests, and I'll have to quit playing.