I'm working in After Effects CC2014. I made an animation and everything looks fine in the preview, but whenever I try to render it, every frame just comes out as a black solid w/ the dimensions of my composition. I'm using a 3rd party plug-in called element 3D. Has anybody run into anything like this before?
Wild guess: make sure you didn't accidentally selected the layers as "Guide Layers" (right click->guide layer). If that's not the case, show a full screenshot of your Ae interface so we can examine it. Also would help to share Current Os and Ae versions numbers and workflow details.