creo4 config.pro option documentation for: NCPOST_TYPE 
ncpost_type
gpost
*
, ncpost
Each Creo NC
module includes a standard set of NC post-processors that can be executed directly or modified using an optional module. This configuration option controls which post-processing module to use:
gpost - Use the G-PostM-^D post-processors provided by Intercim Corporation.
ncpost - Use the NCPOST post-processors.