OK guys.I,ve re enstalled CFS2,put my backup aircraft folder into it,defragged my hard drive,and restored my system to 2 days ago.Just took it for a fly and it crashed 5 mins into the mission.Any ideas.Richard.  PS I didnt do all that stuff in that order.All else was done after system restore.     PPS.The only thing ive added to my game in the last 2 days was a weapons pack[not from this site] by a major manufacturer that I wont name.Could this have caused the problem.I hope not as I need the weapons for this companys freeware bombers.