I have a TiVo Premiere. I often stops shows in the middle and then resume watching them at a later date. Previously, I could scroll to a show in the Now Playing List and then when I pressed PLAY the show would resume playing where I left off. Now when I press PLAY it starts playing from the beginning. The only way to resume a show from the prior stopping point is to SELECT the show and then select RESUME WHERE I LEFT OFF. Why does pressing PLAY now start the show over? What happened?