whenever i tray to use the volume or input buttons, i get "audio system not registered" popup. I can't increase or decrease volume, nor can i use the input button. I have other sony controllers in the without a problem, but not the control the tv came with. I have the Sony NSX46GT1 46" Edgelit Google TV LED HDTV - 1080p, 1920x1080, 16:9, Wi-Fi, Google TV, 4 HDMI, 4 USB. thanks.