HelloI had the J41 up and running without any hitches. I went through the tutorial flight and tried out some saved landing and approach flights. Pending that, I made a short flight with a cruise level of 8000 ft.However, due to carelessness and inexperience with the aircraft systems, I came into and overspeed/overstress situation. A rather lethal situation, and really lethal to my systems it proved to be. The FSX crashed, and from then on I haven't been able to load the PMDG J41 again. It simply makes the FSX crash. I have deinstalled/installed/repaired the aircraft, I have tried to delete the FSX.CFG-file, I have tried loading from the standard Cessna in both running and cold configuration, I have even uninstalled/installed my FSX SP2 system from the bottom. And all to no avail. So now I am left with a crashed airplane, totally useless. Quite realistic, but not compliant with the basic idea of flight simulation.I forgot to tell that the screendrivers for my Matrox TripleHead2Go died too and had to be reinstalled.I am running Vista 64, and I have never seen a flaw with the PMDG MD-11. And it is still working. So back to tri-jet flying.Any suggestions will be welcome.Perhaps the SP1 will bring the revival of my J41.Regards Ole

Highly suspect that FSX crash corrupted screen drivers.Vista is normally very good at reporting that an application has stopped, and has details of the event availabe either in the expanded dialog box or in the system error evens log (or whatever it is called). You should be able to do a little investigation and find some clues.Wouldn't be odd if there was a bug that prevented the JS41 from running in your machine but working fairly well in thousands of others. Hope you find that bug.