That didn't do anything. i have ran this setup for close to a year with no issues not sure what happened. Thinking about getting a different MIDI controller but not sure that will do anything. something i don't understand, no matter which USB ports I use, all devices show up on one bus, is that normal? I am using the Anker 10 Port 60W Data Hub with 7 USB 3.0 Ports and 3 PowerIQ Charging Ports for MacBook, Mac Pro/Mini hub but problem persisted even when i removed it.