I recently upgraded my DAW from Logic 9 to Pro X, along with upgrading my OS to 10.13.6.
I was able to run both interfaces with mix control into my logic 9 platform, with OS 10.11 Catalina without issue.
The interfaces are chained together with an optic cable and going into my Mac out of interface 1 with a FireWire.
I’m getting an error message that mix control is 32
bit and needs to be 64 bit to run with my setup. If anyone has any ideas that would be most helpful. I’ve reached out to focusrite directly and their support is unresponsive at best.