Anyway, I'm happy a a clam that the major issue solved itself. Now I only need to get the two smaller issues addressed.
First, on both machines (Mac Mini 2018 and Mac Mini mid-2011) I attempted to add a GPU folding slot, using the -1 default. Both times, I got: "On client local 127.0.0.1/36330: No available GPUs." Checked the forum for supported GPUs and it looks like the one on the 2018 (0x3e9b) at least is fully supported, so I must have some other problem. There's only one GPU in each device, and it's running the screen, but I'm assuming that must not be a deal-breaker.
Second, on the the 2018 mini, I tried to add the 2011 client to its client list. It added, but is permanently stuck in orange "Connecting" state (image). Same if I try to add the 2018 to the 2011's client list. Netstat shows port 36330 on the 2011 as ESTABLISHED. I'm using the same (default) port on both devices, but I wouldn't think that would be a problem. There's definitely no firewall between LAN devices.
What other info do I need to provide you in order for you to give me a hand getting this up and running? Thanks for your time.
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