Based on the attached log, I see two suggestions:
- First you should absolutely move X-Plane out of C:--this is a Windows protected location. Because we use a proprietary installer, having it there can cause issues, especially with updates.
- Once you move it, please run the installer and pick "check for updates" to make sure you have all the default files installed.
- Finally, it looks like the last bit in the log before the crash was for AI / ATC. We have some changes coming to these features in 11.10, but for now you might try turning off AI aircraft to see if helps reduce the crashing.