A while back I installed 5.20 Beta 56 and conducted a bunch of measurements of our Dutch & Dutch 8c as per this manual. Now, months later, I've updated to 5.20 RC and no longer have the option of the 8c being listed as an option under Measurements / Playback. The machine running REW is on the same network as the 8c and is able to open a web-page that allows one to change the speaker settings so I'm guessing that the problem isn't network related. Any suggestions as to potential reasons and/or how to diagnose?