The forums logged me out and the "previous version" of saved text lost a bunch of additional info....
I am using After Effects CS5 10.0.1
The crash alert message includes the text:
Last log message was: <large number> <DynamicLink> <5> /Library/Application Support/Adobe/Common/dynamiclink/CS5/dynamiclinkmanager.app
-- The external drive has the same OS and version of CS5.
-- I uninstalled / reinstalled CS5 suite, with the cleaner script.
-- I used Cocktail to run maintenance scripts to clean caches, etc.
-- Problem involves two projects, one originally created in CS4 (a large project) using Photo-JPEG footage (640x480) exported using the
CS4 render queue (and reimported with fx added), and a fresh small new CS5 project using keyframed psd layers created in CS5.
Try deleting the entire preferences folder (<drive>/Users/<username>/Library/Preferences/Adobe/After Effects/10.0) and restarting.
Thanks for the response.
First things I tried: delete prefs folder and delete prefs folder + restart -- didn't work. Then I rebooted into an external drive with same OS/AE version and the same project file works when running off the external drive. I also completely reinstalled CS5 using the CS5 cleaner in between.