This site is being deprecated.
Please see the official X‑Plane Support page for help.
Are you using only default aircraft, scenery, etc? If not, try it to see if the add ons may be causing it.
If it is reproducible with the same steps every time, you can file a bug here for us to investigate. Try to find the shortest set of steps to see it. If it requires a lot of steps or a long flight before seeing the crash, sending a .sit file often helps us investigate faster.
This site is no longer being actively maintained.