Mastercam (and most CAM programs) backplot the source code for the program, not the code itself.
Check to see if it's a post error, then you may be able to find out if there's a Z problem. Maybe something in the geometry causes a glitch when posting out of Mastercam. This Z output would then tell you if it was a software output problem or the Multicam's. Have you tried using the Multicam Job Previewer to find the exact point where this error occurred? The verify function would not see this as an error but by going line by line to the error point you will be able to see the Z axis output that the router received. Our z is a servo motor, not air assisted. Has anyone ever had a similar error? Can a file become corrupt all of a sudden? We have run numerous 3-D files in the past without any problem.
This does not show at all in the verification or backplot in Mastercam. Recently we were doing a 3-D operation, (toolpathed and posted from Mastercam 9.1 and x2) and out of nowhere the machine, while being in the correct x and y axis, dipped down too far down in the z and cut about an inch - then lifted up and continued on. We have a Mulitcam 5000 series that we have been very happy with.
