Yes, same problem here. It happened after using a. Png wall 1024x1024. I can load another. Png and set it, but can't seem to find a way back to any of my. Jpg walls. Anyone have a fix? Another clue may be the size of the Png files are quite large.
Yeah strange and odd but somehow it does the trick. If have too much png files.
You can just plug it in on your pc/laptop to delete them, much more convient.