My preview will play, the only thing it won't do is play about the first second of any preview. It just holds on the frame first frame and then pops on about a second later - it does however play the audio while it's holding the first frame. If it plays all the way to the end and loops again, it will then play the entire segment.
This is AE 2014, Mac 10.10.3 (Yosemite) 16GB ram
This is what I've tried:
- Restarted AE
- Restarted Mac
- Updated to newest version of AE
- Purged memory cache
It's a known bug. They're working on the fix. They haven't announced precisely when it will be ready.
This is a bug introduced by Mac OSX v10.10 (Yosemite). We have worked around this Apple bug in the version of After Effects currently under development, which is targeted for release next month.
Thanks for the update... I'll wait to upgrade my home computer.