I’m having the same issue with After Effects CC, but JUST TRYING TO TOGGLE BETWEEN AE AND FINDER. NO OTHER PROGRAMS OPEN. This has happened to me with two different machines in our studio, both with the following specs:
2×2.93 GHz 6-Core Intel Xeon
64 GB 1333 MHz DDR3
On one machine I was working on a project with about 25 layers, on the other machine a project with 3 layers.
Makes me think it’s a bug in AE. Any others having similar issues?