Mountain Lion desktop wallpaper won't change!

You might want to consider starting a new discussion. Since this one is a couple of years old, less people are likely to look at it. A new post would be much more visible. You can link to this one.

Might be a corrupt .plist.

Do a backup, preferably 2 backups on 2 separate drives.

Go to Finder and select your user/home folder. With that Finder window as the front window, either select Finder/View/Show View options or go command - J. When the View options opens, check ’Show Library Folder’. That should make your user library folder visible in your user/home folder. Select Library. Then go to Preferences/com.apple.finder.plist and com.apple.desktop.plist. Move the .plists to your desktop.

Re-launch Finder by restarting the computer and test. If it works okay, delete the plists from the desktop.

If the same, return the .plists to where you got it from, overwriting the newer one.

Thanks to leonie for some information contained in this.

Eric

Thanks for this. I’ve done what you suggest, but there isn’t a desktop.plist. I might try creating one, although you’d expect it to create one if one had deleted it.

Best

Brian