Artist Mix + New MacPro - Failure To Communicate

[skylinepro]

I have been using the Artist Mix with a 2013 trash can Mac (2013 - 10.14.6 OS X) with the latest software and firmware successfully (EuControl 20.6.1.3). I'm now upgrading to the 2019 MacPro with 10.15.5 Catalina. Using the same version of Eucontrol software, the same cabling plugged into Ethernet Port 1, and the same version of ProTools 2020.5, the Artist Mix is not recognized in the EuControl Setup window. In System Preferences, I set up a static IP address for Ethernet 1 that matched the static address I set for the Artist Mix - 192.168.77.77. The network tab in system preferences shows green as the Mac and Artist Mix are fully communicating, but the Eucontrol Setting fail to list it. FYI, I initially used DHCP for network protocol, but only got a yellow indicator, which is why I switched to manual address. I have the Eucon set at Ethernet 1 in the System Prefs tab. I'm doing everything correctly, yet there is something blocking the connection. This appears to be a bleeding edge bug. Murphy's second law is the more complex the system, the greater the chance of failure. I've always said you can tell the pioneers by the arrows in the backs. Any ideas folks?