I'm trying to use Foldit to do a simple comparison of people's ability to learn visual-spatial tasks on computers. I ran some trials with an older version and I'd like to do some more, but I need them to be comparable. Basically all I need is to allow people to play through the intro puzzles as they were in May 2011. Is this possible at all? Is there somewhere I can download older versions, and then skip the update, or is it possible for someone to send me an older version?