I have 4 TV’s and they all operate with ROKU Units. On each, I have added the Tablo app. 3 of the 4 TV’s operate Tablo fine. All channels in the guide load and perform fine. A 4th TV loads the TV guide of available channels. Any channel with a NN.N channel format tries to load but returns to the guide. Any channel without a channel number loads fine. I have the latest version of both ROKU and Tablo loaded. My Tablo is 4th Generation.