I'm attempting to learn Partmaster and taking baby steps. My first rudimentary drawings are of a simple square contour with a circular pocket. Attempts to post process this simple square contour and circular pocket job for MACH3 have resulted in Mach alerting me that there is a Zero Radius Arc Line 78 and won't further digest the G code.

I used what I thought was a Mach3 & with a second attempt a Mach2 post processor... yet both alert to this Zero Radius Arc Line situation.

Am I using the correct the post processor...???

Steve