Motu 2 Audio Interface will not use frd calibration files

[Sliderule]

White making frequency response measurements of my speakers I noticed that the high frequency rolloff was excessive. It was 16-25dB down from 1oKHz to 20KHz. The calibration frd was working fine with my ancient Mobile Pre audio interface (which finally died) and REW which I confirmed by loading some older rew files. I have confirmed that the calibration file is loaded by clicking the tab on the measure page. I have added the calibration file to every input. The Motu 2 is connected to usb-c port. I checked the devices in device manager and all looked fine. I have attached some screen shots of the REW preferences screens.

 

[ManCaveAudio]

Hi, I am planning to buy Motu M6. I have one doubt in mind. Can I use this interface for multichannel measurement? Can I use this with 7.1 measurements with Excel drive in REW?

 

[Sliderule]

I don't think REW supports simultaneous multichannel measurements.