To insure that dynamic links between PrP always work, follow either one of these steps.
1. If no dynamic links exist in your timeline, right click on the clip you want to send to AE and select "Replace with AE compositions". and AE will open . Continue this process while both PrP and AE are open. See #2 when reopening that project.
2. When reopening a PrP project that already has dynamic links to an AE project, IT IS CRUCIAL to select any of the existing AE DL clips , right click and select "Edit in Original".
This opens the existing AE Project that is already associated with the PrP project.
Then you can add clips to AE using "Replace with AE composition"
This procedure will avoid much heartache and frustration associated with dynamic links.
It may not be critical, but things do seem to work better if all linked comps are in the same AE project.
If there are other work flows that are effective...thats great. I just know what reliably works for me. If you prefer another way, more power to you. But I can assure anyone following this approach will not have any problems.
Sorry Jim, can't go along with you on that.
On a pure basis - I don't see any advantages.
Yes, PrPro is able to read somehow AE cash files or whatever that allows to play on the fly some simple dynamically linked AE comps without rendering preview. However that ability evaporates right after more or less complex AE comp.
So there are actually NO dependency on how to start building Dynamic Links. It's possible to start from either PrPro or AE.
There are NO dependency on where to store dynamically linked comps. It's possible to store them either in one AE project or in several different ones, which is more appropriate solution when you need to get really complex AE comps or spread the job between colleagues.
What is more, it's possible to get both AE CS5 and AE CS5.5 comps in one PrPro CS5.5 project via Adobe Dynamic Link.