This is a question that would be better answered by Focusrite. Not sure they ever offered a driver for Windows 7. Then, what wrapper are you trying to use? Did they not have an RTAS option(not requiring a wrapper)? Can you try a different wrapper? Again, a question for Focusrite
Then, consider you are trying to use stuff that is quite ancient in computer-speak. As neat a concept as that was, its been passed by for most of our world