That message just means that at some point, you clicked the button to set the condition as "normal", and then changed something. It's the absolute worst feature in Mach3, and should be completely ignored, as it causes nothing but confusion, unless you are using it for a specific reason, and understand exactly how it works. It has zero effect on Mach3 functionality.EDIT: There is also a warning in Yellow: "Axis not referred to normal condition". I guess this is related?