Assuming that you used the current 1.6 image and not an older copy, it looks like you have a hardware issue with the 2nd TiVo (if you used an older copy it will be trying to contact the old emulator which is now offline).

Check the network card is fully seated and did not move.

Check the cable is firmly attached to the card.

Do you run a short cable from the card to a Joiner? If you do, bypass this joiner and plug the cable directly into the card.

Failing all that, try swapping network cards between the TiVo's.

Peter