I'm getting the same problems on my UE55MU6400. Iplayer has worked fine since we got the TV up until a week or so ago, looking at the iplayer info there was a new version released on the 14th Dec so may be related. I can open iplayer and browse for shows but now whenever I try to play anything I get the spinning icon and then the same 02001 error.
I've updated the TV firmware to 1151, and tried re-installing the iplayer app from the store but no luck.
After reading this thread I've tried My5 for the first time and just get a 'Whoops' error, but the catch up apps for ITV and 4 work fine.
I have the same problem on my UE40MU6100, iPlayer used to work fine for the first few months I bought the tv, for about a month now it just won’t play any shows getting the “something went wrong” message - same with My5. Have done a full reset and reinstall without success, this is so frustrating!
I have this problem on my Samsung 2017 49" Q7F QLED. I did post in another thread. The problem applies to iplayer and My5. All other apps work fine.
I contacted iplayer and they have now posted this message on their website: https://www.bbc.co.uk/iplayer/help/latest-news/samsung-02001
I contacted Samsung support who took control of my TV, reset apps but that didn't work. I was told that Sansung are aware of it and it would be fixed in the next firmware update. However, a newer firmware was released on 27th Dec 1155.1 but that didn't fix the issue.
I really wish Samsung could get this sorted out. I'd like to watch Blue Planet II in UHD, but fear it will be gone by the time this issue gets fixed.
I guess nobody has found a work around yet?