Just installed these most recent Omega drivers, but when I try launching FS9 I am getting a message which says driver such and such was "invalid" and FS9 would be started in software mode only. Did I miss something here, or is this a known problem with the 2.5.51 Omegas?Thanks for any sort of advice!

Sounds like something went bad with the install. Download Driver Cleaner here: http://www.driverheaven.net/cleaner/Follow the cleaning instructions to the letter, and then do a reinstall of the drivers. FWIW the 2.5.51's work great for me here.Hope this helps,Greg

Hmph. Can you tell I had not done any video driver update for some time? When you mentioned that file remover, I immediately recognized what I had missed.But now everything's back in shape - thanks again! :D