Rekordbox DJ Program Is Glitching! HELP!

Only When I Use Rekordbox DJ Program Does My Mixer's Cross Fader Go Into Reverse Involuntarily. Sometimes it even switches channels. I switch the the AUDIO DRIVER to CDJ/XDJ but it will work momentarily on its own, then when I hook up the second usb/second CDJ to the computer it knocks the sound out of the master rca. I have a DJM 700 and 2 CDJ 2000s. I have a mac. Is there an option that I am over looking to cause such an adverse reaction to me hooking up second cdi?

OBSERVATION:

When I use a USB stick that is ran thru the Rekordbox evaluation, but no program, everything works fine. The cross fader, channels and all effects all work exactly like they're suppose to. It is only the program that is causing these strange glitches.

PLEASE give me some info or a change I could make. Thank You