The browser seems to like to take over any app that is currently not opened so any port that is not opened anywhere else, the browser app, will attempt to open and hence lock down the port.
Your project file does not make sense as you are not using aliases so I don’t know what apps or controllers are connected to what?
Please do not use physical ports. Use descriptive aliases instead.
I assume you are ultimately wanting to send PC messages to Gig Performer, perhaps from your MC6, perhaps from Ableton Live, or maybe from Your GFC-50. I would really need to know the big picture of your intent to understand what you want.
Steve Caldwell
Bome Customer Care
Also available for paid consulting services: bome@sniz.biz