Need help activating my cable card on Tivo HD for Comcast San Jose

I have this issue in Houston, TX. When I first received my HD Tivo, i tried several multistream cards and none of them worked. When I went to two single stream cards, that worked. Now Comcast has upgraded the cards, sent me message that my current cards stopped working and I had to return them for updated cards. Now they don't even offer single stream cards and I'm back to multistream cards that don't work. I've just traded out two more and will be attempting to have Comcast troubleshoot these. I may have to end up returning the cards and getting an HD receiver from Comcast which will really suck.

I had this problem as well (gray screens on several channels, including HBO and other premiums after installing a new cable card in my Tivo HD box). After three days of calling in, I called again and spoke to Dontrelle, and he was very helpful. I think the most important issue was that in the Cable Card CA screen it said "Status: not staged" when it was supposed to say "Status: ready". When I told him it was not staged, he somehow worked in the system and got it staged. After the CA screen said "Status: ready" the channels didn't work right away, but after I restarted the TiVo everything worked. Thanks Dontrelle! Sounds like a lot of people are having this issue, but it really only takes a few minutes to fix if you know what the problem is.

I've had this issue on three separate TiVo HD boxes. Each time I have to call my local Comcast number (404-COMCAST). They troubleshoot and never seem to resolve it, which means scheduling a technician to come out. The technicians come. They are baffled. They leave. The last time it happened to me, someone from Comcast called me back after I took a survey and she fixed it right away. This time, I back to square one. I'll call back and try the "Status: not staged" message to see if it helps.