I need help turning on the debugging for MasterCam X. I have turned on at the control definition and set fastmode to debug but still no information in the nc file ?

Set bug2 to a value of 35 or 40. This is the column position of where you want the debugging params output. If it has a value then this is not your issue.

Example

bug2 : 0 --Before
bug2 : 35 --After

HTH
AC

My experience with X is the fastmode switch does not work anymore.
I could be wrong.
You need to do both the control definition and change the bug2 value.
Making the bug2 value a negative number outputs ALL postblocks called.