There are just too many versions of windows going around, XP 32 bit, XP 64 bit, all the vistas and windows 7. I am thinking there are compatibility issues because of this, this is why some people have minimal problems, and other people like me who run xp 64 bit are having several issues. not one of my captainsim aircraft can fly an ILS, and there are several sound issues. I hate to say it, but I am losing my patients, because my P*M*D*G* MD-11 performs perfectly with no bugs or any issues, but the cockpit doesn't look as visually stunning as the captainsim aircraft. I just wish the bugs will get fixed. CS aircraft look and sound good, and could very well be the very best addons if the bugs get fixed.