I am a new user of Netflix and have found it great for films but when viewing a series I sometimes hit a problem. The episode starts normally and then I get a message saying there is a problem and I should try later or watch something else. This is annoying when I have watched a couple of episodes and then have to wait until the next day.
Is this normal or is there something wrong with my set up?
No I would say this is not normal. I have watched several series on Netflix and like the way it always remembers where you left off. This may not be your issue but whenever I have had problems with Netflix it has always been because my Smart tv has forgotten the wifi connection and we have to restart the router.