I can´t watch the Video due to an error.
Try to add a screenshot or a description of this error including the NX Version.
I create operation in NX 11 then take machine in library of NX, run "simulate machine" by "machine code simulate" but NX appear warning such as on.
Not so good idea simulate machine in GEOMETRY window - in PROGRAMM window will be more better. How you add your CNC?
Check .dat in CNC folder
Check *.pyc files in cse_driver folder