Problem
On your Mac, nothing happens when you change your Desktop wallpaper.
Cause
The preference that manages this setting has become corrupt.
Solution
- Go to your User Library folder.
- Open the Preferences folder.
- Delete the file “com.apple.desktop.plist”.
- Logout and log back in.
You should now be able to change your background again.
Thank you so much! I had tried everything; going onto Apple’s forums, trying other computer help forums, etc and your’s was the only one that worked. Thank you again for sharing your knowledge.