Windows 10 Professional VarAC version 8.4.4 and VARA HF v4.8.4 Using a Xiegu G90 with purchased CAT cable and DE19 USB interface. Worked like a charm till yesterday but now PTT refuses to work. CATfrequency control works perfectly. CAT PTT works fine when I use the PTT ON - PTT OFF buttons in the Settings; But the system does not trigger the transmit when I actually try to send a beacon or a CQ. No problem with transmit with JTDX. Tried to overwrite settings in CAT device and re-install without any luck