The Slingplayer simply 'slings' the signal that is coming out of the back of your box. Although I assume you can view recorded programs on the box downstairs, they are probably streamed from the DVR through the network and are not output on the plugs at the back (they are probably just outputting whatever channel that box is tuned into). You need to move it back.
About 3 weeks ago we moved the Slingplayer from upstairs DVR box to a DVR box downstairs that does not record programs. This week I noticed that I am not able to view DVR recorded programs through the Slingplayer but I see them being recorded on my TV. Any ideas what is going on? TYA