Thanks for your post. I did take several comps in AE and make them all one comp, then used dynamic link to import that comp into PPro. Everything played in the PPro timeline okay after that. Just seems like dynamic link should be able to playback several AE comps in one timeline.
I had the same problem on another box with only 4gb of RAM – thought that may have been the problem – apparently not.
Tim May
KAKE TV