Can't get my DIGI 002 working with Logic


hi , I've just purchased a Mac book Pro with os 10.7.6 installed , and I installed Logic 9 on it and it work perfectly with the Mac speaker ;
then I've tried to connect my DIGI 002 rack , downloaded the stand alone COREAUDIO driver for AVID web site , and It seems to work but the only problem is that I only can hear the music from one channel ( left) of my soundcard.
The DIGI work perfectly because I also use it with a Pc , so I can figure out what it could be .

Thanks for any help