Scratch Disk Full ERROR in Photoshop CS3

You may get different kinds of odd errors if the Photoshop preferences file gets corrupt .

1. Exit Photoshop.

2. Go to: Documents and Settings\Application Data\Adobe\Photoshop\8.0\Adobe Photoshop CS Settings
[In Windows 7 --%appdata% -- browse to -- Roaming\Adobe\Adobe Photoshop CS3\Adobe Photoshop CS3 Settings

3. Delete the Prefs.psp file.

4. Open Photosop and the application will create a new (default) one.