Had this bug happening on me several times today (just like Lurchibald described) and also before in episode 3 where I replayed a bit but then also found a possibilty to fix the bug by coping that prefs.prop. It was annoying, but only because I liked the game a lot.
I usually don't play games on the first day they come out and I don't remember any game I played to have problems that effected the gameplay as much as here. I just hope the budget for the next game will be bigger, so things can be tested and thought through better next time
