While looking for upcoming UEFA games I tuned to channel 491 and received notification of an "incompatible video signal" (a warning I never had seen in my 18 years with DirecTV). The receiver subsequently would not respond to commands from the remote. I accomplished an RBR followed by a power-down; after both reboots the same situation prevailed. I only could watch programming on my HR24-100 by changing the channel from 491 via an arrow key on the front of the box, after which the remote worked properly. Anyone else encounter this problem and understand what might have caused it? Thanks!