DJM 900 NXS2 *ISSUE* - STEREO/SPLIT

Hi, 

I just updated my DJM 900 nxs2 mixer to the 2.07 firmware. After updating I noticed my stereo headphone option only has sound playing through one earphone when I have the maser cue option selected. How do I change it back to hearing through both earphones when selecting the master cue??