Odd TiVo/Cablecard Problem

After forcing an update on my Premiere XL4 and restarting it, I have 9 channels in the 800 channel tier of Comcast which no longer tune. Interestingly, their 200 channel tier equivalents ( both tiers being HD) all work fine. So, it doesn't seem to be an authorization problem. And, the 800 and 200 tiers both tune the same physical channel. Could there be bad data acquired by the TiVo, or did something weird happen to the cablecard? "Hits" to, and reauthorization of, the cable card had no effect.



Feel free to ask for any data you think is relevant.



Thanks,





Mark