Windows XP:
1) Navigate to [Drive]/Document and Settings/[User]/Application Data/Quark/QuarkXPress 7 or 8.
2) Delete the file named 'Job Jacket.prf'.
3) Relaunch QuarkXPress.
Windows Vista and 7:
1) Navigate to [Drive]/Users/[User]/App Data/Local/Quark/QuarkXPress 7 or 8.
2) Delete the file named 'Job Jacket.prf'.
3) Relaunch QuarkXPress.
Mac OS:
1. Navigate to: [Drive]/Users/[User]/Library/Preferences/Quark/QuarkXPress 7 or 8.
2. Delete the file named 'Job Jacket.prf'.
3. Relaunch QuarkXPress.