I use Mac OS Sierra
I experiment some difficulties to configure a recording project with a Soundcraft MTK 12 mixer.
The 12 inputs and 12 outputs of the mixer are activated in the audio and midi setup of Mac OS. The mixer is set to be used as input and output peripheral.
The mixer is recognised in the peripheral setup (ASIO driver). I configure the VST connexions (outputs and inputs).
The audio recording tracks are set to the buses. The audio tracks are armed for recording and the monitor button of each track is activated.
If I try to record or monitor a track (voice for example via a micro), the voice is correctly played via USB return in a stereo inputs of the mixer but it is impossible to record the voice (no waveform) or to detect an input level of the voice.
PS: I already made succeffully recording projects with RME Babyface or Steinberg UR28M.