1.Create a new sequence that has the same attributes of the one that wont play.
2. Open the sequence that wont play and COPY.
3. Go to NEW sequence and Paste.
4. Hopefull that will fix it.
I had this problem as well. Some think that the Player was retooled between 6.01 and 6.02. Hence the issue. It solved the media and playback issue on my system nicely.
Tom Daigon
PrP / After Effects Editor
http://www.hdshotsandcuts.com
https://www.youtube.com/watch?v=XRIg6h-LIm0 (Best viewed at 1080P and full screen)
HP Z820 Dual 2687
64GB ram
Dulce DQg2 16TB raid