Yaobing, one thing I'm noticing,
When looking under manage channels, you can select in case wanted, a set of preferred tuners per channel.
I'll never set those as all my four tuners are identical and should be picked one after another in order to get to the next available one.
But exactly for those channels where I'm getting a 'no tuner ...' error, you can't see or select any tuner.
Even MC finds the channels when scanning onto the selected tuners. But not listed within the manage channels overview.
Maybe there's something not 'coming thru' or pushed when scanning and adding new channels for Sat>iP tuners ?
In case i can find something additionally I'll let you know asap.
Thanks for your help,