The engine cutting out when switching views only happened on the first flight of the day, and by pressing "E" the engine started again. It didn't occur in any other flights that day, so it's probably not serious. I did fly one long (60 minutes) campaign mission and clicked on the debriefing feeling very nervous; but the game did not lock up. My mission results were displayed and recorded! It seems as though the problem has been solved by moving the sliders back, and many thanks for your replies. By the way, is it possible in this game to warp? Or only in CFS3? Whenever I have tried to warp to the next waypoint by pressing "X" I get the message "You cannot leave as you haven't reached the required speed."