DDJ 1000 'half working'

Hi.  I finally unboxed my new gear today, and after downloading the relevant drivers, THEN persuading my Macbook Pro that yes, i knew what I was doing and I'd quite like the driver downloaded please, i got sound out of both my pioneer speakers.  It seems that only the left half of the console 'work's though.  I can load a song up to the right side, but there isn't any sound at all from either speaker, where as doing exactly the same to the left side works perfectly.  I've checked all faders etc are neutral (to my knowledge) but still nothing,  All the lights on the console work, and the song is playing on the Mac.  I've uninstalled the driver and re-downloaded it, but still nothing. 

Any ideas please.  I spent 4 hours getting figuring out the driver/Mac problem to get this far....