So I purchased the game from humble bundle, and have tried downloading it via direct link. Every time the download finishes, I try to open the main installer, but I'm greeted with an error message saying " A device attached to the system is not functioning." I have no idea what's wrong, and I've also tried the torrent download.\ which doesn't work at all. I'm running Windows Vista. I've tried re-downloading it several times and each times has failed. I've also switched between Internet Explorer, Mozzila Firefox, and Google Chrome, but none of them are working.

Help?