Thanks for the info. That’s part of the problem, the CTD’s are happening with no warning, publishing nothing to the logs about the crash, or showing up in the windows logs. I’ve flown pretty much the same routes or around the same areas since I’ve purchased the product last week, I’ve been able to complete some flights, but the majority end up as a CTD. Hard to believe that the crashes wouldn’t be more consistent if it was truly due to terrain radar and corrupted scenery files, if my installed scenery doesn’t differ from flight to flight. I’ll try doing some flights on the East Coast and see what happens.