I just had my H3 installed Thursday. I'm on software U334. Every time I try multiview my screen goes completely black. It almost appears as if my tv has been turned off. And after a minute or so I get a message from my tv saying to check that the device is connected properly. And then it says no HDMI signal. The green power light on the receiver is still on. I can power off the box and then power back on, and it comes back on. But no multiview. Is this a software issue? Anyone experiencing this?