repeatable range check error in demo

[ox-steve]

I thought I'd give the demo of SE4G a go since we're all looking for a turn based game a bit more varied than Stars, and this looked good...

However, running through the tutorial, I get to the point where I have built a ship and try to move it through the warp, but as soon as I click on the warp gate the game freezes with a range check error. I've tried this several times now.

I also then tried actually starting a game, building a ship and trying to move it. Again, as soon as I select either move or warp and click on a destination.. range check error.

Any ideas?

Obviously it isn't something with the demo itself or something so obvious would hopefully have been fixed by now! However, it does put me off actually buying the game, particularly since a search on this forum has shown a fair amount of crashing in the full Version..

My system is win2k, Athlon1100, 512Mb, Geforce2Ultra gfx card - can't think of anything else relevant.

Unrelated question. (Note: I am NOT trying to pirate the game!)
Do I need to buy one copy for each computer if I want to have a 3 or 4 player LAN game, or will one copy work on multiple machines? (Stars! for instance had license number packs so you could buy an 8-user pack far more cheaply than buying 8 individual copies).