Hooray! The Apple dual processor G5 computer finally came in today. I plugged it into my studio. Et voila. Everything worked.
Pro Tools HD interface: worked
Pro Tools TDM/RTAS plugins: worked
Control 24: worked
Pro Tools software: worked
This is the first time in my life that I have plugged a computer into a complex environment with complex software where everything just worked.
I will take most of the day tomorrow to convert work over to the Apple-based Pro Tools environment. I will run the studio production environment in parallel until I am confident that I can switch over to the Mac. Looks like it won’t take much time.