Here's some great news direct from PopTop's Phil Steinmeyer today:
The demo will be re-released hopefully next week - just bringing the code up to version 1.06 to match the main game, and adding a pitch screen for Tropico to the end. It'll be hosted by Gigex. I think it's been unavailable for a couple months, but this will make it available again for at least 6 months.
Phil also told me that he has fixed the group variable game save bug and they are looking at one other bug and hope to have patch 1.07 out very soon. Great!