When I click on my after effects app this pops up every time! I have tried uninstalling and redownloading it, but every time it stays the same in my creative cloud & this is the only thing that will ever pop up. SOS please helppppp (I have a MacBook Pro with the latest software update)
I just want to download the trial, not the full program yet
You say that you can't download it, but then you show an error message that comes from starting the program, which indicates that you have downloaded it.
Why are you trying to use the After Effects CC (12.x) version? If you're trying to use the trial version, then you should be using the current version, After Effects CC 2014 (13.0).
If you are intent on using After Effects CC (12.x) on Mac OSX v10.9, then you must also install the update: