I've setup the Roxio inline with the xbox through HDMI and getting no signal at all. I tried plugging it into my sky+ box and the signal showed up straight away (obviously couldn't record as signal protected) and that was using the same HDMI cable as with the xbox. tried rebooting everything and plugging everything back in but still no signal.
Also, have just noticed that its says Input: Component Status: No Signal. I'm unable to change the input further up as its greyed out but says HDMI in there.