Yay, I downloaded a fresh copy, and it worked just fine! The copy I downloaded this morning was smaller (378 KB), and in addition to the gibberish diagrams, the notations were bold letters instead of figurine fonts. I don't know whether they had a bad version on there when I downloaded it this morning (and later replaced with a fixed copy), or if my copy was just incomplete. (I think my download this morning signalled that it was complete, but I'm not sure I'd bet money on it.)
At any rate, the new copy looks great! Thanks for your input, guys, I'm not sure if I would have thought to try the download again on my own.