What version of the Mac OS are you running?
Have you tried yesterday's updates to AE and Premiere?
I did, actually – had just upgraded to 2015.3 the day before and it made a mess of things. I installed the 2015.3.1 updates to both applications and we'll have to see if that eliminates that issue. I experienced some odd freezing in Premiere while trying to re-link some video assets, had to Force Quit, and then couldn't launch the app again. Frequent restarting seems to be the only way to work around the issues.
Let us know if things are better.
When you say the 2015.3 update, "made a mess of things", could you be more specific? I didn't have any issues with installing the new version. (But then, I checked the box to keep old versions present and a lot of folks don't do that.)