As most of us, I'm on a deadline, and AE is giving issues.
Single layers do NOT have the layer guides (dots around layers for scaling, rotating, etc), and has lost all 3D reference axis visuals. I've restarted the project several times, enabled and disabled the "GUIDES" checkmark in the comp. Working in AE 2014.
Here's an image to show where the layer guides should be, they just disappeared... which has been happening every day on this project after a couple hours of work: