So I have Mac Pro Running Universal Control version 1.7.6 and driver Version 126.96.36.199437 5875. The Mac is running Mac OS X High Sierra Version 10.13.4. The mixer is a 24.4.2. I have had this mixer for a while and I didn't have this issue. I could use the Mac simultaneously and be running other programs such as Wirecast and Propresenter. This is mixer is used in a church and I'm trying to fix this issue. Please help. I have spent hours on forums with no success. I know it can be done since I had this working before the update on the Mac and iPhone. Thank you.