What render settings? What footage sources? Sounds like a critical Quicktime component or one of the native file format handlers is not initializing.
Render settings are ProresHQ HD 1080 29.97. Which works in 12.2. Footage is a variety of sources from jpg to Prores. Nothing out of the ordinary. If it's quicktime then why would it work in 12.2?
Any other ideas out there on this one??
You may have tried already, but what happens when you render an image sequence?
Secondly, have you tried to render using BGRenderer by any chance? http://aescripts.com/bg-renderer/
I'm running AE 2014.1.1 (188.8.131.52) and I can ONLY use BGRenderer to successfully render a 10second animation I'm working on (1080p 29.97fps rendering MOV with ProRes 422HQ codec). It fails after 2 seconds into it. BGRenderer flies right through it with no problem.
Hope you get it sorted out.