I purchased Winstep Xtreme last summer, but ion that order I accidentally purchased an extra copy. I contacted support, via the forums, and email, but I never got a response, and I was never refunded. Now, since I upgraded to Windows 8, I get the error message that I am using a shareware version of Winstep. I know I activated it, and I'm pretty sure I can still find my receipt. How can I fix this?