Need help with 4870drivers and vista dreamscene

[Raventon]

i just gotten a 4870 and installed driver.everything runs fine until i activat the dream scene wallpaper for vista ultimate.CCC crashed...and the overclock profile are not working after the crash.even with a restart and disabling the dream scene.the card wont overclock..

is there anyone with the same problem?
previously i was using a nvidia card.not sure whether the change of video drivers caused this problem