I just update to Mavericks last night and today when I tried to open after effects, it tells me my version of operating system is not compatible with AE. I looked up google to find a remedy for this solution. I then came across the update of 11.0.3 from adobe site, aswel as the 12.0.1, but found no luck. It wont let me update it and gives me an error number
Error Code: U44M2P28
If you're running After Effects CS6 (11.0), the After Effects CC (12.0.1) update is not relevant to you.
To install the After Effects CS6 (11.0.3) update, do the following:
1. Restart your computer.
2. Open Adobe Bridge and no other applications.
3. In Bridge, choose Help > Updates.
If that doesn't work, uninstall After Effects CS6, restart your computer, reinstall After Effects CS6 (11.0.0), and then do the three steps above again.