I note that the Mac CD-ROM is on special offer, but I live in the Middle East and it takes forever for stuff to arrive here in the post, and the post is also very unreliable (courier eg  FedEx is more reliable, but very expensive).

I would be keen to buy this if:

1.  I could download the full version
2.  I could be assured (as per my earlier post) that the Save function would work

Because it looks like a really nice game so far.

Is the Save function disabled in the demo version for Mac?

Only I cannot get it to work.

Clicking on "New Save Game" does nothing, the "Load" button is totally disabled, and the "Save" button flashes as I click on it but nothing happens.