I have noticed several people have a similar issue to me, and I was wondering if they have found a solution to this?
I have tried to get in contact with the Foundry numerous times via male and phone. I have contacted Adobe Technical support but they said that it's an issue with Keylight and to take it up with the. My new graphics card driver is up to date and I have tried the keylight 1.2v16 update via The Foundry I even changed my graphics card in a hope that would solve the issue but nope.
I currently have the newest most up to date version of the the software, have tried uninstalling/reinstalling the software, tried downgrading to previous versions of After Effects and have even re installed windows several times. However recently its just been crashing non stop, after checking my events viewer every error log states 'KEYLIGHT' as the problem. Several weeks ago it worked fine, no issues. It's a right pain especially when you are working on a green screen heavy project with a deadline looming. For the past few weeks Keylight has been crashing on me constantly while i use Ram Preview.