Haha! Got it!
For both zten and zdict I just changed the "image scale" menu option to something other than the default and, TADA!, the kanji bitmaps appear.
Now if only all problems in life were so easy...
By the way, are there major benefits of zten over zdict (or the other way round)?
I understand that zdict is built on zten source but is a little bit more useable (e.g. automatic copy of selected text to search buffer ready for next search)
How about ztenv?
Having used zdict with edict and kanjidic, it seems I don't need zten at all.
Thanks,
Jonathan.