Xubuntu desktop settings not showing wallpapers

This is what I get when I open desktop settings on the "Background" tab. The directory I have browsed to has pictures in it but they are not shown when selecting a desktop background.

Someone please help, I've had enough of the vanilla Xubuntu wallpaper.

screenshot showing the Desktop dialog window


Solution 1:

If ~/.cache/thumbnails is write protected, unable to be created or otherwise missing, this can happen.