BBC Iplayer Channel Not Working

I am having a problem with the BBC Iplayer channel. When I try to play the live stream I get an error message:

Cannot load m3u8: Cross Domain Access Denied

This occurs irrespective of whether I try to play the stream on the plex server or whether I connect to the server via my MBP. I've attached a copy of the media information that Plex reports for the stream.

I can see all of the different streams, only receive the error when I select the "live" stream to play. I have installed other channels, e.g. Revision 3 and videos seem to play correctly.

Any advice would be greatly appreciated.