Hey Daniel, I apologize, I’m working on a site that wasn’t originally built by myself to begin with. I was unfamiliar with the fact at the time that apparently I do have the extension Advanced Theme Builder installed after all, I must’ve always had it installed.
So now the weird thing is that it’s installed but the background image still refuses to change. Like I mentioned before, when I set a background image using the select image button it displays fine in the theme preview, but as soon as I hit update or do anything that refreshes the page the background image disappears. Do you have any ideas as to why this may be happening?