I have FSUIPC 3.40 and just purchased a key. I have installed the 9.1 update. Tonight because the aircraft basically runs out of control on final I reinstalled the software and update and copied your dll to the modules directory. I also did nothing with any settings. I am running a sidewinder precision 2 which does not have forcefeedback. I checked and do not believe there are other copies on my system of fsuipc. I have windows 98se, a AMD 2800 and via chipset and get frame rates anywhere from 12 to 20(where it's locked). Anyway when I select the FSUIPC there is a extremely brief (unreadable its so fast) view of I believe to be the fsuipc intro screen then the screen goes blank. I hit the Esc key the cockpit comes back up. This process will continue whenever I try to call it up. Of course I have been unable to enter the key. Any ideas? Thnask you.