The full Test Studio product (as well as Test Studio Express and Test Studio Run-Time edition) are all built on top of our free Telerik Testing Framework. Because of this the free framework you're asking about is included in those products. There is no need to try to install the free framework since it's already there.
Enjoy! Let us know if you have any other questions.
P.S. I changed your support ticket into a public forum post for the benefit of our other customers.