It originally wasn't in the Theatrical Productions index, so I added it. I did the customary invisible edit on The Pirates Of Penzance, but the index markers are incorrect. The next production is properly shown, but the previous is a self-referential link (i.e, it links to the page it's already on, in this case The Pirates Of Penzance.)

I don't know if it's a problem with the indexer or what.