Getting Video Not Available error message.

Have restarted wifi (connected & working well on other apps), cleared cache & reinstalled the appletv app (no updates available), set to play SD only, & used apple troubleshooting (No problems could be detected). The video will play normally for 10 or so seconds and then the error message will pop up. Sometimes it saves watch progress, often it doesn’t, but you can fast forward and choose a place in the show before the "countdown" to the error begins.