I went to friend's house to watch some boxing the other day with a large group of people. He wanted to have a couple different tvs going, but one of his DirecTV receivers was out. Since he was waiting for a replacement to arrive, I offered to bring my HR22 to hook up on his other tv. We knew that if we put his access card in my receiver, it wouldn't work so we used my card, my receiver, attached the coax and thought we'd be all set. We ended up getting an error message saying "problem communicating with dish". Anyone have any idea why this would be the case??