Ok thank you so I checked and here what I have
I update it today
I have Mac version 10.8.5
My After Effects version 12.0
And plus I have few more Adobe program's and they all work.
There were a lot of other questions in that post Todd gave you. We really need more info for us to help. Please describe in detail what you do and what happens after. Also, more info on your computer's specs.
So When I turn on my After effect's The program turn's on but after I click something on top (Ex: File, etc) It turn's off and says Unexpectedly ShutDown.
I have a 2012 Mac vesrion 10.8.5
Processor: 2.9 GHz Intel Core i5
After Effect's: V 12.0
I update After Effects then I download the lates version of CUD or something like that, It told me to do. And still it just shut's off.