So, there's at least one confirmed bug in Pantzer. Unless you have the right font available to our X server, you get a horrible error, telling you so.
There is a patched version, on my disk, not yet released. It needs a little bit of testing, but until then, push an existing font onto PANTZER:*FONT-PREFERENCE* (the fix is, essentially, instead of using the CAR of that list, traverse it until an openable font is found).
Thanks to Athas of #lisp for notifying me of the bug's existence. Once it was pointed out, the fix was, as they say, trivial.