Something to look at if your not into heavy systems

Well I finally got around to giving this a try, unfortunately it seems to hose my FSX program.After installing, when I try to launch FSX I get a fatal error and have to close out of the program.Luckily I backed up my original B737-800 files, put them back in, and all was well again.Not sure why this is happening on my setup, but it ain't working for me... I was really looking forward to an improved default 737.