I started getting a - You cant use this version of the application "Adobe After Effects CS6 with this version of OS X 10.9.1 - You have Adobe After Effects CS6" 11.0 - all my other Adobe CS6 programs are working - photoshop, premiere, bridge ect. Is this a delete and re install or is there a way around this problem?
You have to run the update for AE. You may have to use the uninstaller and then re-install. I'm guessing that this started after you ran an update for your OS.
When you ask a question assume that we know nothing about your system or your history with that system. We can provide better help if we know if your system worked before, what changed, and anything else that pertains to your problem. Something as simple as an automatic update to your virus protection can kill another app.