I'm having problems with my Tivo Bolt Freezing sometimes in Plutotv. it was working fine 3 days ago, but today, it's been freezing and gong to a black screen whenever i try to change the channel or exit plutotv. it loads fine. i've had to reboot the tivo a few times, after this happens. any ideas why this could be happening? I just checked, and this same problem seems to be happening on my Tivo Roamio as well.