Error Loading 209… Tricky

I host the blog https://www.Xeroreview.com. I’ve been trying to move it over to the “Shiny” theme by Creamy (available on the themes database.)

For some reason, when I try to view a post in its own page, It doesn’t load and instead gives me “Error Loading 209.” This only happens on the Shiny theme. I’ve tried this with multiple browsers and gotten the exact same result. I’ve set up my test site to be completely identical to the real one, down to the plugins (SI CAPTCHA Anti-Spam, Tagline Rotator, WordPress Importer, WP Hide Post) but it refuses to replicate itself on anything but the main site.

Please help, I need to get this working because my entire design revolves around being able to link to long posts which don’t appear on the front page, and if they can’t load then there’a a problem.