We're aware of some customers having issues watching Video on Demand content from Rakuten and Sundance and will see this error code TTG-252 on their TalkTalk TV Box. If you're affected by this, you should still be able to watch the content via the web.
Latest Update 07:35am 23rd March - Our engineers are looking into this and we will provide any updates once we have them. We apologise for any inconvenience this may cause.
SimonB