Single Posts Not Appearing Correctly

I was adding blog posts last night, and all of my content was displaying correctly. When I logged in this morning, everything was wonky, and I have no idea what to do.

Initially, both the blog and the single posts were coming up blank. Apparently, WordPress has reset the blog page in the Reading settings. Once I fixed that, the blog page displayed fine again. However, no matter what I do, I can’t fix the single post page.

I am using WP version 3.6 and the uShop theme. When I switch back to a default theme, single posts show up fine, so I’m pretty sure that means it’s a theme problem. I’ve contacted support but heard nothing, and I’ve got hundreds of visitors on my stats now seeing blank pages.

My theme uses template builder, so I’ve checked and rechecked that the template and layouts are set correctly, and they are. I can barely see some content waayyy on the right of the single post page, and if I highlight it and paste it into Notepad, all my content is there… so it’s appearing on the page… somewhere. Here’s the link: http://www.littlebirddeals.co/three-chicks-couture-giveaway/

I have no idea what happened.

Would appreciate any help!