I'm having a similar issue. I have the DJM 900 NXS2 mixer (along with the CDJ 2000 NXS2) and I'm unable to connect the mixer to my computer via Traktor despite having the latest firmware installed on my mixer and having the latest driver installed on my computer. The DJM-900NXS2 Setting Utility is showing the mixer is "Connected" to my computer when connected via a USB cable however when I open Traktor and try to select the DJM-900NXS2 as the audio device, is says "Not Connected" next to it.
Here are all my hardware specs:
- 2018 Macbook Pro running High Sierra version 10.13.6
- Traktor Pro 2.11.3 17
- Mixer is running firmware version: 2.05
- Mixer Setting Utility version: 2.0.2
- Mixer Driver version: 2.0.1
I used to be able to connect my old original NXS mixer (and original CDJ-2000NXS) to my computer just fine using HID mode, with the NXS mixer set as the audio source in Traktor. I can't seem to do the same thing however on the new NXS2 setup.
Thanks in advance for the help!