I upgraded to yosemite, and now AE won't open.
Steps I've found on the forums that I've tried and haven't worked:
the folder is already set to 'read & write' for my account, and for everyone.
so I struck out there, as well.
Are there any other things I can try? or is the next step uninstall and reinstall?
After a time-machine reboot and a clean reinstall of everything, I was able to successfully install the 11.0.4 patch. Do I get points for resolving my own question?