I've been recently bothered by an occasional loss of receive signal using WSJT-X 2.0.1 running with High Sierra on a MacBook Pro USB-connected to a TS-590SG. I would force receive to recover by briefly hitting the WSJT-X TUNE button. I thought this to be some undiagnosed issue with USB in general, and cabled around the USB hub directly to both of the MBP's USB port, without success. The MBP and hub is USB 3.0 while the Kenwood appears to have a USB 2.0 port. Today, there is nothing I have found to get WSJT-X to receive though the program transmits just fine. The trouble is, any other program using the same setup works just fine, such as fldigi, cocoaModem, and JS8CALL. I even made a PSK31 QSO just to prove how crazy this scenario is. The Sound Preferences panel within System Preferences shows audio coming through the CODEC. I am ashamed to admit that I did the very thing that most Windows users do - reinstall the program. No joy! Any thoughts from the Mac community?