Bob,
Did you get the 2010 probing working with the XHC Mach3 USB motion card?
They released a v2.39.9 on 2017.9.19. The release notes state: "Set the probe user dro 2000,2001,2002 to replace the variable 2000,2001,2002.
so user could getuserdro(2000) to replace the GetVar(2000) when probing."
I'm trying to get this working now on 3.043.062..