I’ve had the WDTV Live SMP for a while and never been able to connect it with my slingplayer.
I have the echostar hds-600rs (DVB) which works great everywhere except my front room.
I get the error message (Error code 22) and to update my slingplayer, it has already got the latest firmware installed.
The WDTV has Version 1.13.18 installed also. Rebooting both devices has not solved it.