Missing radio search? Is it just me?

Just realised that my 2 Squeezebox Classics no longer have the Search for Radio stations menu choice. In fact under Internet Radio all I have is the BBC Iplayer plugin. I am running LMS Version: 7.6.1 - r33110 on Windows XP. Was the menu option removed by Logitech somehow or has my install become corrupted and needs a re-install?

Under the Settings/Plugins Menu the Radio Directories item is greyed out.

thanks for any guidance