I have been using SP1 with no issue whatsoever..I installed SP2, cant even get the game to fully launch..the "MIcrosoft Flight Simulator X" splash pops up, then about 10 seconds later:"A fatal error occured" etc etc.uninstall sp2, games works perfectly, reinstall FX2.. no good..if its relevent:Geforce 8800GT-OC AMD 64X2 6400 8GB OCZ DDR2 1000 Dual channelXP home latest updates.

Maybe the following link will help -- http://blogs.msdn.com/ptaylor/archive/2007...all-issues.aspxJim

I resolved this issue..turns out it was some DX 10 files I was using with xp, a program called "DX10 preview" which allowed some DX10 features to work on some games, even under DX9.FSX, did not like these file, i removed them and poof, problem gone.