I had a theme I was using for years and years. But there was one problem: The "new tab" plus sign was missing. After much work I could get it on the extreme left of the page or the extreme right, but not after the last tab like it should be. So that's when I made the fatal mistake of restoring the default settings.... yes, I fixed the plus thing, but now my theme did not work. In fact NONE of them work except the space theme and the default. And worse, when I click on "get more themes" all the theme previews are missing. When I click on the preview button it only changes the color of the bars, but not the imagery. :-( Very sad day. I really miss my themes.