Bill,
10.9.9.2 is the correct Adapter IP address and is what the Warp9 system configuration utility gives you by default. It's not a setting that's CNCRP box specific. The Smoothstepper IP should be 10.9.9.9. I didn't have to do anything special to get smoothstepper working with Mach4 when I upgraded, although I did set up a new profile. I didn't try to use one of the default ones.
When you start Mach4 and create your new profile, you should get a screen that asks for your ESS IP address. If it isn't prefilled, you enter the default for the ESS IP: 10.9.9.9. I'm guessing that you didn't create a new profile when starting Mach4 and that's where the problem lies.
Gary