At a quick glance, that looks like a soft limit problem. When you configured LCNC you should have set up min and max limits for each axis, and those error messages say that you are trying to move beyond one (or more) of them.

Alternatively, you say you changed the scale. Do you mean you changed the steps per unit settings? 8 microsteps is the right sort of number - did you change the "steps per" the wrong way, by any chance?