Thanks man, I sorted it out by deleting a layer with a couple of (not fancy at all) plug ins applied to it.
I posted it here, in case anyone needs some extra info:
https://forums.adobe.com/message/6515078
To elaborate a bit further, my files are openEXR with a lot of 3D channels in them, I was running them through EXtractoR, however the faulty layer was the one that didn’t have that applied, but Brightness and Contrast and Tint.
My machine is an imac with a 3.4ghz processor and a 2gb amd radeon graphics card, I have 32gb ram and the project is extremely simple, there isn’t any animation in it, I was just making still frames for the storyboard, so my footage was one frame long.
I’m using the dame exr file over and over, though, like 11 times with different channels extracted from it.
Also, this was the first or second time I used AE CC 2014, so far I’ve been sticking to CC.
And yes, yesterday google literally returned nothing related to the error, today everything it shows is related to this post or the one I created at adobe.com
Thanks!
D.