No, I was never able to find a workaround for that, you need Win 7, I don't know if it works on 8 (I despise Win 8 though)...
Have you read this post?:
https://www.epicgames.com/unrealtour...218#post404218
I also tried to contact Flak with no luck...
EDIT:
I reported the problem through Support Center, I hope they don't ban me =P