try to repair permissions (applications/utilities/disk utility, click the repair permissions button).
if that doesn’t help, remove the entire ae preference folder. should be in users/username/library/preferences/adobe/after effects, it’s should be called ‘9.0’. just move that to the desktop and then see if ae will start.
if not, try creating a new user account, switch to that and see if you can open ae. if so then there is something bad with your other user account.. it can be hard to track those issues down, you might just use the new user account or call adobe support.
if it doens’t help, then you know something is wrong with the install… you can try to re-install (try a safe boot, then install, check the apple help for safe boot instructions) or call adobe support. it’s free for installation issues…
the only other thing i can think of (but your crash doesn’t sound like this issue) is bad quicktime components (codecs). if you want to rule those out, go to the library/quick time folder and users/username/library/quick time folder (not the system/library quicktime folder) and move all the contents to a folder on your desktop (or some place outside the library folder).
old third party codecs can make ae crash, butit usually gets further along in the start up… if that helps, try to find the latest versions of those qt components and install those.
Kevin Camp
Senior Designer
KCPQ, KMYQ & KRCW