I have a Slingbox hooked up and running very well on PC, tablet, Roku 2 XS and phone. When I try to throw the Slingbox signal to my Roku 3 it does show up in the dialog box but there is a yellow warning icon and it will not show up on TV. No other devices are connected., Roku 3 is up to date. WiFi signal is strong. All apps appear to be up to date. Even removed Slingbox from Roku and let it install while it was connecting same black screen, the Roku says it is going to the channel, but nothin!