Forgive me for posting here but I cannot send a ticket as I get no further than http://sup Below is my query: Problem Almost immediately after launching the 737 onto a runway the computer crashes. My computer An Apple iMac 27 inch2.7 GHzQuod-Core Intel Core i52560 x 1440 resolution8 GB memoryITB hard driveAMD Radeon HD 6770M with 512 MB FSX runs on a dedicated Windows 7 partition Unfortunately I’m not sure whether I have Windows 64 bit or 32 bit How I tried to solve the problem 1. Uninstalled Acceleration2. Uninstalled FSX3. Deleted FSX files from Program Files/Microsoft Games 4. Installed FSX, flew for a few minutes then rebooted5. Installed Acceleration, flew for a few minutes then rebooted6. Installed the 737 then rebooted. 7. Launched FSX, chose the 737 and the computer crashed almost immediately the flight deck appeared. Your help would be appreciated. Cliff Harris

loa fsx in scenery with default 737, then load pmdg737ngx, problem solved for me!