One last thing to try (which always fixes random CTD's for me) is to open the AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalCache folder and delete these two files: Content.xml ROLLINGCACHE.CCC MSFS will create new files on the next launch - the Rolling Cache file...
Delete the rolling cache in the sim. Go to Options > General > Data > Delete Rolling Cache and click on Save & Restart to apply the changes. If the issue persists after following these steps, you might want to try reinstalling the Alaska Bush Trip challenge. 2. Updating Issues The issu...