Windows 7: Hauppauge HVR 950q, audio but no video on Digital QAM channels

Just got the Hauppauge 950q USB tuner. Simple setup, drivers were all found. TV setup all ran clean. I am connected to my cable so I have both digital QAM channels as well as analog cable channels. The analog channels all work great. The digital channels give me audio but no video. Just a big black screen. I am running Windows 7 Ultimate 64 bit. I tried various screen resolutions and tried displaying on my TV over HDMI, still no picture. I have upgraded the drivers from Hauppauge and even reinstalled Windows Media Center twice. Nothing seems to fix this. Interesting, when I move the slider on the time line when viewing the blank picture I see a thumbnail still from the TV show I am supposed to be watching in the little box by the time line. I have installed Win TV 7 which came with the 950q and Win TV 7 works good for all channels, digital and analog. Just digital doesn't work in Media Center. Any ideas?

I just downloaded the latest Nividia driver from 2/21/12 and installed it. This solved the problem!