I've been getting the same error for about 2 weeks now. Made various posts earlier. The error would show on and off for only a few of my regular channels. Now with the recent maintenance, I see ALL the American channels with the same error. What I have concluded is that this error occurs when you try to play a DOWN channel. This error goes away when the channel is playing again.
I've been going nuts over this, but now, when I get this error, I will make a post that the channel is down, and see if the user community agrees that the channel is down.