When I try to install the fs91update it gives a message that "the fs9.1 update appears to be already installed. The installation will now terminate". I had 9.1 installed and working but had to completely uninstall the program due to other issues.I have uninstalled fs 9.0 and reinstalled, shut off the antivirus program, looked for fs9.1 in the registry, but still the problem happens.Hope someone can help. Thanks

Hi,Remove the "Backup" subdirectory in your Flight Simulator directory and you can install the upgrade (this directory contains the "old" files and is checked for existance by the upgrade).Regards,Hugo

Wow, that worked! Thanks so much for your speedy and helpful response, sir. I wonder where that folder was stored? I would have thought it would be erased in the uninstall.