The Special:Version page shows that it has been installed, and I have included it in LocalSettings.php. But when I try to use the tag <DPL> or <DPLE> or any sort of combination of those names written out with the parameters enabled as default, it doesn't actually turn into a list and only has the tags written out like plain text.
I've installed this on a fresh mediawiki install and this is my first time using it, so any obvious pointers would help.