Noticed that if I create a custom field and save it, say as radio check box, then return and decide to make a drop down menu instead of radio box the embed code does not update.
Using TwentyTen for testing. Haven't tested on other server but did try other themes with no change.
Great tool BTW, hoping for a glossary one day then my life is complete.
Going to tear down because in a rush so can't offer much else. Discovered becasue I couldn't get custom fields to appear but could get the taxonomy code to work.