I have a SB Classic and an Premier XL, the only way I got it to work was NOT use HDMI. Tivo to the TV via Component and Sling via composite.
I have an Powered HDMI switch as well (tested with and without switch) if I turn off the switch with Tivo hooked up above I get video. Any time the switch or powered I get the "HDMI connection not permitted. Press Select for more information" Tivo message.
I have an Powered HDMI switch as well (tested with and without switch) if I turn off the switch with Tivo hooked up above I get video. Any time the switch or powered I get the "HDMI connection not permitted. Press Select for more information" Tivo message.