Hi GTD,
Thanks for your reaction!
One would almost suspect something like memory-addresses being double used or something (conflict/overlap).
I have not yet found a solution. It remains strange that the controllers do work on standalone versions of some of the Steinberg software but not when used in Cubase 6 nor 7.
Another reaction, in which it was mentioned that working in Administratormode does enable the CMC’s, should enable Steinberg to find the rights-matters that make the CMC’s act as midi-keyboard in stead of midi controllers.