Cannot play recorded program until after reboot

I’ve had my Tablo DualHDMI for 3 months (bought in December). When I tried to play a recorded program yesterday, it wouldn’t. The time span (0:00 to 59:40) seemed correct, but it would not play. I tried several times. Other recordings played fine…

I finally went to the Settings menu and drilled down and selected the Reboot option. Once the unit came back up, it played that recorded program fine.

The last time my unit rebooted was shortly after the January firmware update. Perhaps an internal buffer was filling up?