Hed no problems when installing and using developer and comsumer preview. but when i try to install release preview this is what happends. the error is shown in this video http://www.youtube.com/watch?v=TCE9in6fB-Q&feature=g-upl . i tried to install it regardless of error but when it started to preparing desktop it pop uped error. see my system specs and i hope we can solve this weird graphical corruption error.