We moved our TiVo Premiere upstairs today from the downstairs location, where all was working well. The Premiere replaced an S3 HDTiVo which was working fine with Netflix and Amazon and YouTube.
The Premiere has been giving me "incompatible video signal" messages when I try to watch, for example, Portlandia or Arrested Development. It's fine with old episodes of Cheers or movies.
The connections comprise coax into the Premiere, HDMI into a Denon receiver, and HDMI out to the Sharp Aquos TV. Occasionally, we get audio (of Arrested Development) and no video. We have assured the quality of the connection between all the HDMI cables, all of which functioned perfectly before the Premiere swap.