Intermittently when I export a photo out of Aperture….my MacBook Pro hangs/freezes…no other way to recover than holding down the power key and rebooting.. Have checked permissions and rebuilt my Aperture database which is housed on an external drive.

What’s annoying is that the behavior is not all the time.  Checking the Aperture forum on Apple…others have reported the issue with no clearcut solution.  Anyone have any idea?

-Michael