ever since i got this plane,...on shutdown of fsx, it crashes and says a fatal error has occured,...but only when closing fsx not in game???

Try opening your joystick or yoke controller and leave it open in the background. Pete Dawson reported some "hiccups" with certain controllers and FSUIPC4 caused by lack of support from the hardware mfgr. Another fix that worked is to do a clean restart of FSX by renaming. FSX.CFG to .SAV then restarting FSX. There are some conflicts between the NGX dlls and other Addons. By installing the NGX dll files first, the conflict may be resolved. Finally, try running FSX without FSUIPC.I hope this helps,Rick BertzKMSP/PHOG