I am having an issue with homing. After a few gcode runs then shutting down for the night then starting up the next day mach 3 will not home all axis (the motors don't move but the indicators turn green). One time the Z axis would home but not x & y, once none of the axis would home, the last time only the x would home not z & y. The dro's for the axis of the motors that do not turn do not change.
I can restore from my backup of the particular custom profile and the homing process works again.
It seems as though mach 3 is the culprit most likely due to my lack of experience with this software.
Does anyone know what would cause this homing problem?