Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

JediMeister

macrumors 68040
Oct 9, 2008
3,263
5
I don't see anything specifically about error 8003 in the article but try giving these steps a try if you haven't already. A cursory search using Google also shows moderate success by starting in safe boot, trying to empty trash then restarting normally.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.