Rekordbox 2.2.0

After updating to this version a few days ago my CDJ900's do not recognise any playlists via pro DJ link. After connecting via the link button 'WAIT' appears the CDJ screen, after that at the top of the screen 'Rekordbox1' appears but I am unable to see, browse or play any music.

All tracks have been re-analysed and still nothing.

Occasionally 'E - 8302' will appear on the screens and the wording 'Not Loaded'