I am desperate. I have already tried the 2004 Forum with no luck. FS9 suddenly decided it could not find 18 dll files. They are there in the Modules folder. I tried rebuilding the cfg file. I have installed/uninstalled several times with no joy. I did a hunt/kill file search to try to eliminate all FS9 orphan files. Still no joy on install, says it cannot find numerous dll, but they are there ? Could this have anything to do with the 9.1 update that I finally installed a few days before this problem surfaced. I have tried to find all 9.1 files and kill them, but I may have missed something. Or is Bill G. objecting to too many installs with 9.1 and having a kill code embedded. I have had to reinstall prior to this disaster on 3 other drives due to drive failures over the years. This is driving me to distraction, not to mention not being able to fly. I will even buy a new boxed set if that will get me back in the air. I thought about X-Plane, but will have to get version 7...no vista in this cockpit. I WILL TRY ANYTHING ( as long as it is legal,moral, and within my somewhat shaky ethics ) TO FIX THIS.