How do I change the desktop image?

Question

In System preferences/desktop and screensaver/desktop I presumed that I could specify a directory for my desktop background, but when I try an add a directory to the list it says:
'The folder you selected is already present in the picture source list.'
It isn't, but there are two Aperture libraries listed (neither of which I can delete using the '-' button
Can I add and remove directories from the list?

Answer 1

You might also try deleting the preference file for the Desktop pictures, which will return you to the default state, so you can start over. You should then be able to add the folders you want. Here's the file to remove:
"/Users/yourname/Library/Preferences/com.apple.desktop.plist"
If that doesn't do it, you could try cleaning out the Desktop pix cache files, and remove the plist again. The cache files are located inside this folder:
"/Users/yourname/Library/Caches/Desktop"
I suspect something is wrong with plist, since I also have Aperture installed, and what SHOULD appear in the Desktop pane is a single entry for "Aperture Projects" with a disclosure triangle listing the Library, All Projects, All Photos, individual projects, and so on. Under the Aperture Projects you should have the Folders category, also a disclosure triangle, and containing the list of folders you have added.
Francine
Francine
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