When I started up my imac this morning I saw that my desktop wallpaper was changed to Apple original wallpaper, is this normal?
Custom oneWere you using a built-in wallpaper, or was it a custom one?
I've found that MacOS very stupidly doesn't actually copy the file if you supply your own photo (it just links to it), so if you move the file you were using it resets.
The images is placed in a costume folder and the screen saver has worked for years. I tried to copy some image to the picture folder, but it didn't work either, no picture found it says. It must be a bug, I will wait until next beta version and hope it will work then.where is the image located? try moving (or copying that image) to your pictures folder, and making sure it's visible IN the options in "desktop and screensaver", or simply add the folder the picture is in to the list in that system pref...