Do you know PHP? There is something wrong with my post cache, obviously. For whatever reason, your post includes a character or sequence of characters that breaks the PHP code I have which escapes your code and puts it into an external file. I will take a quick look, but I most likely won't be able to do anything until I get my computer in a couple of days. If I can't figure out the problem, I'll just disable the post cache until then.
Unfortunately I couldn't figure out why it can't read your snippet from the post cache, so I just created a workaround where if a cache of a code snippet does exist, and does contain the snippet, but it isn't readable for some reason, don't use it and just reparse the code snippet. I'll take a closer look at it in a couple of days.