Unable to download Elemental

I just bought Elemental and it keeps pausing the download at 57%.

-- [21/11/2010 8:21:42 PM] ----------------------------------------------------
Context: DownloadFile - File Download (Web)
Message: File downloaded is smaller than expected

C:\ProgramData\Stardock\Impulse\Temporary\DownloadQueue\elemental\elemental1.09n[b].108.impulse
File size expected: 2028404904 File size received: 1156841472
Build #: 1976

I have tried shutting down firewall and virus scanner, as posts for similar issues when downloading from Impulse indicate, it has not helped at all.

I have tried over 20 times now without success to download this game.

I can purchase and games with no problem over Steam, so no idea why Impulse is broken.