Roku channel series programs (all) are recycling in a loop when I attempt to play. On the screen listing the series, episode, date etc. when I click play it simply flashes and returns to screen. Everything else works as far as I can see.
Try removing the channel from the Roku home screen by navigating to the channel tile, pressing the * key on your remote and choosing 'Remove channel'. Then restart your device from Settings>System>System restart. Once your player starts up again, add the channel back once more.
Does this clear up the issue you are seeing? Please keep us posted what you find out and we will be able to assist you further.