same problem here. After clean install the newest image, every build-in wallpaper or custom image is grayed out  and i cant select it.
any thoughts?
EDIT
I solved it by putting the desire wallpaper inside the default folder of xfce wallpapers.
	
	
	
	
any thoughts?
EDIT
I solved it by putting the desire wallpaper inside the default folder of xfce wallpapers.
