by beaky » Sat Apr 09, 2005 2:50 pm
Check your CD for dirt/damage; likewise your CD drive. And once you're running FS9 again, you might want to get the "No CD" patch, so you won't have to worry about the CD anymore. It's easy to find and install.
Of course, if it's a different problem, some of the aforementioned fixes might help.
But you say you've downloaded "many, many aircraft"- it could be that one of those files (usually a model made for an older version of FS) is crashing the sim. Try yanking all of your add-ons out of the FS9 Aircraft folder, then reinstall them again one by one until you find the guilty party. Or check for all 2002 or older planes first... good luck.