So here’s why I am confused (and rather frustrated) - I tested it out last night using returns.maxpat and Monome Home.maxpat and included the screen grabs where it was suddenly working perfectly. Now this morning I’ve opened up my laptop, connected up the Arc again, opened up the very same patches and nothing shows as connected. When I return to Ableton Live and import any of the patches such as ARC4 Mapper or Arclab ArcControl, they also show no connections, nothing can be mapped. etc.
This is what is rather defeating. When you feel like something is working, then isn’t, and literally nothing has changed (apart from me going to bed, waking up again, and opening up the laptop). It’s so weird!
I used ls -l /dev/tty.usb* in Terminal and it reports ls: /dev/tty.usb*: No such file or directory 
I don’t think it’s an Ableton 32/64 bit issue as it only runs in 64 bit now, it’s the latest version and even if I’m not using Ableton Max is unable to recognise Arc as I’ve just shown with Terminal. I’ve also unplugged Arc, replugged it, restarted, etc.
Thanks so much for trying to help out here. I can connect the Arc to Ansible and have it working immediately and perfectly so the Arc doesn’t itself doesn’t have any issues either. Hmm…