DJM 750 USB interface not working (no audio) in Logic Pro X.

Hello, I recently upgraded the firmware on my DJM 750 to version 1.2.0. It's currently hooked up to my computer running two CDJ 2000 Nexus2 decks. My mac does recognize the connection and a signal is going to the computer when I check the levels in the sound settings of my Mac. The problem is Logic also recognizes the 750 interface as an input source but no signal makes it to logic, or Garageband for that matter. What's the problem?