My FS9 shuts down when trying to load any PMDG 737. I have downloaded the patches, tried changing the hardware settings, lowered the AI settings to zero, and finally reinstalled the program.My system has 3.2 intel, 2048MB ram, nvidia w/256 MB. Can anyone help me????????Thanks!Gene

Does you're Flight Simulator lock up or is it completely shut down? If it locks up, there's a Driver problem in you Graphics Card, which card do you own?Michael Henke

It completely shuts down. I mean the program quits immediately and I am back at the desktop. My graphics card is Nvidia 5500Thanks for your help!