I don't know what you did, bro. XD
I copied and pasted your pastebin into the wiki and forums, and it worked fine. Observe...
Edit: Found the problem.
You missed a line break. Yes, it really does break the page when you do that, lol. XD
The line after Item 3 needed two linebreaks before it. I'm not 100% sure why. Looking into it now.
Edit 2: For SOME reason, it seemed to have ignored your line break altogether. I messed with it a bit, and it is now suddenly working with one line break rather than two. However, if I remove the line breaks, I get the same error, so that was DEFINITELY the problem.
Edit 3: AHA! I got it. When you have a line break, be extra careful not to press spacebar. The line may then LOOK empty, but it's totally not, so it doesn't count as a linebreak!