After replacing the MCX8000 last week I thought that would solve the problem of not having a signal in my VDU display in Serato but, it didn’t so I created another volume on my MacBook and installed MOJAVE. I then reinstalled SERATO DJ PRO and everything is working correctly. The VDU is correctly…

Try using the dropdown box and pick video and then back to mix in the record choices. Video must be enabled in the setup to have access. That worked for me