I just recently purchased this sim add-on and was exited to do so, as it has high reviews. However when I loaded it, selected a 737 Aircraft and hit Fly Now, I received a fatal error and FSX shut down. I have a high end computer with the Windows 8.1 platform (Brand New). I can't find any information on this issue and in all the reviews I read, there was no mention about this sim not running in 8.1. FSX Gold runs fine and I believe this sim add-on in newer. Any suggestions? Very frustrated.