I have recently had my macbook pro hard drive restored from a backup due to High Sierra issues.
When reconnecting the usb from the DJM 750 mk2 to the laptop, OSX can see the interface in Audio Setup but it cannot be viewed in the Sound Setup (and hence no output) and more importantly not in Traktor. The Audio Setup in Traktor says "DJM-750mk2 (not connected)".
I can operate the mixer standalone using turntables but cannot interface with the laptop.
Please help as its driving me crazy!!!
When you installed the drivers, did you follow the steps to disable the High Sierra driver security, then install the drivers again immediately after that? If you did not, you'll need to install the drivers again before the security prompt becomes visible.
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Got it. Many thanks