I don't seem to be able to get my GUI on my amp to display on my Pioneer plasma. I've read the manual a few times now and it does not show how to get it, if it's not displaying. I have tried getting it through my HDMI and via the video output (v-aux) on the front of the amp to the front of my plasma box (input 5). I thought this worked in the past. GUI is displayed on my amp and I can change parameters via the amp display. has anyone got any idea what I'm missing?