First, read the CableCARD installation FAQ.
http://www.tivocommunity.com/tivo-vb/showthread.php?p=5448376
Second - do you have a single-stream CableCARD or multi-stream?
If you are moving this card from a TV, it is most likely an SCard. In most cases, all but the copy-protected channels will work on tuner 0 and all non-encrypted channels will work on tuner 1.
That said, your best bet is either getting another SCard or replacing the existing SCard with an MCard and getting them paired/validated properly.
http://www.tivocommunity.com/tivo-vb/showthread.php?p=5448376
Second - do you have a single-stream CableCARD or multi-stream?
If you are moving this card from a TV, it is most likely an SCard. In most cases, all but the copy-protected channels will work on tuner 0 and all non-encrypted channels will work on tuner 1.
That said, your best bet is either getting another SCard or replacing the existing SCard with an MCard and getting them paired/validated properly.