1) Check all of your drives for space, not just the one you're aiming at.
2) Trash preferences
3) Fix permissions on the system drive in Disk Utility.
David Roth Weiss
Director/Editor/Colorist
David Weiss Productions, Inc.
Los Angeles
http://www.drwfilms.com
POST-PRODUCTION WITHOUT THE USUAL INSANITY ™
A forum host of Creative COW's Business & Marketing and Apple Final Cut Pro forums. Formerly host of the Apple Final Cut Basics, Indie Film & Documentary, and Film History & Appreciations forums.