I am running X-Plane 10.51 on my MacBook Pro. It runs great with no lag at all. I used to use the simulator on an older Mac with less powerful specs. Whenever I fly in the simulator, it will quit sometimes under an hour, sometimes it will work for longer. I am not doing anything different than I usually do. And, this computer is more powerful than my old computer and the old computer never had this issue. Like I said, there is no lag at all on this computer. I will include the log file. I don't what is causing it to crash so frequently. If anyone has any ideas or can figure the problem and how to fix it, I would really appreciate it. Thanks!