Does AE CC work? (I mean, you're using version 13. Does version 12 work?)
Have you tried the suggestions here: fixing permissions problem that impedes start of Adobe applications and here: troubleshooting QuickTime errors with After Effects ?
i save the project to after effects cc12, and quicktime files do not return errors and function as expected. grrr.
version 12 does work. i haven't seen the troubleshooting link you referenced, i'll try a couple of the fixes there and report back. thanks!
i changed read/write access on the adobe folder in appdata, no luck. then deleted the entire folder and restarted the machine, and problems still persist. in this state, v13 is unusable for me. i'm going to try online support.