Originally Posted by breathemetal
I installed SP1 then SP2
The game boots up, then crashes with a fatal error every time
I remove SP2 and all is fine
Try to disable dx10 preview (if you can't get to the settings window, change it in your fsx.cfg file) and your addons (stuff like instant scenery).
I don't have a dx10 card, but FSX SP2 used to crash when I had some addons trying to run.