I'm using AE CC and I've imported a Pr CC project to use a couple of sequences in a separate AE project. The sequences and related clips have appeared in the project panel but when I click on any sequence I get "Media Pending" (even after a minute or two). Is there something I should turn-on or off to use the Pr sequences?
Make sure everything is on line. If that doesn't work try starting a new project with just one clip and one sequence.
Have you tried Dynamic Link from inside PPro by selecting a clip in a sequence and then right clicking and selecting New After Effects Composition from Selected?