Thank you ArMak.
The firmware is up to date, last updated 30.01.15
The server, as far as I can tell, is a generic DLNA Media Server that shipped with the unit. I have read elsewhere that the server that used to be installed was the ‘Twonky Server’ but it doesn’t seem to be that.
I have ensured that the media server is enabled in the settings menu and it certainly sees my media player (Bravia KDL-48W585B) under the ‘players’ button.
The TV sees the ‘MyBookLive’ but will not list the contents.
I have got DivX to work but that is not ideal as I have to have my laptop on for to be continuously visible to the TV which is exactly what I don’t want!
Any help will be greatly appreciated.