That's interesting, I haven't confirmed the CD32 pad issue myself but it's been confirmed by other users.
http://mantis.whdload.de/view.php?id=938
http://mantis.whdload.de/view.php?id=3165
Looks like it's only playable at all with a stock controller (or the PSX-DB9 adapter in two button mode). The old JST install allegedly lets you play the game without a keyboard but also isn't compatible with the CD32 pad.