I really like your plugin and am looking forward to getting it working. It's exactly what I'm after. However, I installed the plugin and checked the settings. But when it loads on a post I get this big white blank box that runs from the top of the page to the bottom. There is no text and no thumbnails, and it's full page height.
I found other posts about adding a snippet to the footer.php file, which I tried, but that didn't seem to work. I've had to dissable upPrev as my site is live.