Hey thanks Angus,
That was it. I knew something wasn't right about the game the WHDLoad version, but couldn't think what it was. Now I remember going upstairs to where the Map room is and then not being able to summon the lift to get back down. End of game. The save didn't work either AFAIK.
I'm into anything to do with CyberconIII. Played the one demo many times before buying the game back in the day.
If it's too hard to stick on your website, or if I'm the only interested party, I'll PM you my email addy, coz I'd love a copy of it :-D