Hi all .i do not have the problems with dropouts but i thought ill help if i can first you must uninstall drives with the uninstaller then reinstall next go to your audio midi setup app in the utilities folder and make sure you add on yamaha mr ?right click your input output for the mac .please see screenshot. also update to 10.8.4 . then check yur permissions are correct by restarting your mac with the alt key held down then you should get your hd and recovery drive click on the recovery and go to disk utility and repair your permissions.
also check disk repair.
then restart with the mr on before start.
see if this helps
regards
terry
