Some day before Miss Aarti Having problem with NC program Generation while she Running the power mill.
The Problem were Identified by me is Missing Duct Processor for Offline program generation.
Don't forget to Put the dongle again in CPU for Flex Server Because Power mill Doesn't start without the Flex Server..!!
whenever you are Selecting the machine option file, Please be sure Selecting the .opt extension file.
Machine option file is Stored in Under C Drive>Program files>Delcam>Duct post.
This problem Generally occurs due to missing Duct processor Configuration,
Duct Post or processor is generally used for offline program generation for specific CNC Machine.
while post processor is for Direct NC program generation when the machine is connected to System.
Answered with a tutorial: https://grabcad.com/tutorials/requested-nc-program-generation-problem-pp-error