Ever since December 6th, 2013 both my Hoppers no longer save any programs recorded through PrimeTime Anytime with any GB size. Once recorded and moved onto the Hopper, viewing them with Edit shows the File Size as 0 GB. The recordings are there and fully playable and take up space but since they appear to lack size, an External Hard Drive doesn't see them. I have discovered that if you Save the recordings to your Hopper and don't delete them and are patient, in about a month, eventually they will acquire GB size again, but it's terribly inconvenient to record a night's worth of shows that will all save this way.
Until this started happening I used to find the feature convenient because when active, it was a guaranteed way to never miss anything that aired every evening on the big four channels (such as specials or new shows you weren't aware of until it would have been too late) -- it was already all being recorded to pick through and delete or save later. I actually got introduced to some shows on some networks which I wouldn't have normally caught since everything is on at the same time.
Even without PrimeTime Anytime active, I still enjoy the benefits of being able to watch all four channels and record multiple shows from three networks at the same time all on a single tuner. I just have to take a more hands on approach when it comes to recording until this issue is fixed.