Sorry i had a family emergency last night.
But it sounds like your problem is your Net Framework, try downloading this:
http://www.microsoft.com/downloads/details...;displaylang=en
(This is from Microsoft, Made by Microsoft, so its 100% virus free. Its a simple update)
This will update your firmware so you can run unsigned program's, which QuickPWN happens to be. Install this and try again, if it doesn't work get back to me with the problem.