Welcome to Apple Discussions, Cru Jones
If you have not done so since your last software install or update, quit all running applications,
repair permissions, and try Photo Booth again.
If you still have the problem, try all suggestions relevant to your system from
How to Troubleshoot iSight.
If Photo Booth still does not work in any user account, it is possible that a corrupted Photo Booth Preferences file is causing your problem. Quit Photo Booth (and all other applications) and throw away the Photo Booth Preferences file
(com.apple.photobooth.plist) from your
Home / Library / Preferences folder. A new preferences folder will be generated when you restart Photo Booth to test whether it works now.
EZ
Jim
PowerBook 1.67 GHz w/Mac OS X (10.4.11) G5 DP 1.8 w/Mac OS X (10.5.1) External iSight