On my wiki, I keep on changing the background to a picture of the moon. However, every time I try saving it, it never actually saves. The preview is right, but when I click "Save, I'm done", it's never actually the image. I tried resetting the theme and altering some colors to my choice, but leaving the automatic backround color as it was and selected the picture. Still it did not save. I tried it with other pictures too, including ones from my own files, and it did not work. Is this a bug? Please, if you could inform me of what's going on and how I could fix it, I would greatly appreciate it.