Re: Problem with Keylight 1.2 plug-in... Please help!!! by Jason Milligan on Oct 24, 2008 at 8:32:34 pm
Go to AfterEffects>About After Effects (on a PC, I think it is File>About After Effects).
This will show you what version you are using. If it doesn't say "Professional" after the version number, you don't have it.