Thanks for your answer Michael. But remains the same or worse. I thought it would be the NoCD and reinstal de original FS9.exe, and it worked again :( . Solved.But the second time I've started, a new fatal error appears. "Could not detect a valid Microsoft Flight Simulator 9 installation".and has not returned to work.The veriom FS9 is "9.1.0.40901" and run correctly, both the FS and the MD-11. I also reinstalled the MD-11 and remains the sameI'm going crazy :( Please help meEnrique