Was flying along on AP enroute a few minutes after resuming a autosaved flight from the day before, was not currently interacting with xplane at all, suddenly screen went red like a negative G red out and xplane crashed to desktop. Not sure if 650 log has anything relevant, I reloaded xplane and resumed the autosaved flight again before saving it off, the log.txt was saved off. CL650_Log.txt Log.txt
Have you made a clean xplane copy on your computer and tried the 650 on it? (No scenery, no plugins, and dont copy your preferences) just vanilla fresh xplane and then maybe you can add in and see where the crashes start.