Maybe i am missing something but my M1 seems to knock out my cable box DVR when connected. If I plug into TV with no Sling box the channels load. When I plug in the Slingbox it endlesses searches for channels saying "Program will be available shortly" Is there some sort of encryption on the box that is blocking the signal??? Just put in a home theater in the basement and the contractors "accidentally" disconnected my cable run. Would prefer not to open newly finished walls and run a new line. Thought this was a viable option but getting frustrated.