I am using a Yaesu FT-1000MP Mark-V radio and used windows 8.1 then windows 10 home. I have used VARA (free version) and RMS Express successfully ( PTT and Freq Chg). For VarAC I cannot PTT or change Frequencies. Using VARA HF 4.6.4, VarAC 6.2.4, without Omnirig and with Omnirig 2.1. I tried PTT, VOX, Omnirig ways to connect. I use a separate folder for VARA HF and VarAC (VARA2). Changed the tcp ports and pointed to the VARA2 folder. I used two laptops and same results. Tried using USB and USB-D modes without success. Any thoughts? Tnx N9KO