Why can't I record on my DVR?
Check all your connections and configuration between decoder to DVR and TV. I find it is more practical to use the DMI connectors for this purpose. Between my LG TV, LG DVR, LG Blue Ray Player and Decoder I use 3 DMI connector cables. Ideal for me because my TV has 3 DMI points, I just connect each of 3 items to TV via a DMI cable. Now connect decoder to DVR via video-audio cable (red-white-blue). This setup allows each unit to be used individually (i.e. tv viewing, recording, blue ray playing and when recording live TV the TV can be switched off while recording. Just remember to select the appropriate DMI connected unit on your TV remote (on "input" button).