The other day we took the opportunity to do some MotionBend testing on MacOS X 10.10 Yosemite. Everything is looking great.
This is on a 27 inch iMac:
This is a 15 inch MacBook Pro (Retina display):
We also tried a 13 inch MacBook Pro (Retina) too.
In fact, we were testing MotionBend 1.4.1 Release Candidate.