Hello!
Today, I bought this development kit via the Steam store, and ran it for the first time.
I encountered the same error as this user, but I am running it on a laptop, not a desktop; as such, I do not know if the drivers on http://www.leadwerks.com/werkspace/page/drivers would work for me. There is a link below the windows section ("For laptop graphics drivers please see AMD's website."), but all it does is lead to the main AMD download page.
My laptop is a Toshiba Satellite L875 (running Windows 7, 64-bit,) containing a Radeon HD 7670M graphics card. The card's driver version is "14.501.1003.0" according to dxdiag. Driver model is WDDM 1.1.
If you could point me to a working driver, or give some tips, I would greatly appreciate it!