I seem to remember that as a digital download game, if I changed computer, I would be able to re-download the game for my new machine.

I'm probably being a plonker, but how do I download my game? I had it on my old computer but can't find where to get it from.

I've downloaded stardock central, which recognises that I purchased the game, but gives an error message and can't download.

I've also followed the impulse link from the stardock website, but that gets me nowhere either.