On a side note my 'back' option on the menu has been removed. I have changed #define UI_HAS_BACK_KEY from 1 to 0 and uploaded but it has not brought the 'back' option back.

#define EVENT_TIMER_500MS {Custom_500MS();}

#define UI_HAS_BACK_KEY 0

schau mal in die Configuration.h wo steht der #define Z_PROBE_BED_DISTANCE  ??

#define UI_DISPLAY_TYPE 5

#define Z_PROBE_BED_DISTANCE 5.0 // Higher than max bed level distance error in mm

#define  _SET_OUTPUT(IO)  do {DIO ##  IO ## _DDR |=  MASK(DIO ## IO ## _PIN); } while (0)

Kann zum Teil Entwarnung geben - der Drucker bewegt sich wieder, es lag an einem fehlenden "Delay" Eintrag bei den Achsen.  Und zwar hier - #define STEPPER_HIGH_DELAY 2    War also mein Fehl

#define Z_UP_AFTER_HOME 0

#define CONFIGURATION_H

#define DEFAULT_PRINTER_MODE 0

//#define EVENT_UNHANDLED_G_CODE(c) Custom_GCode(c)

#define epr_memoryX1        400

set #define FEATURE_UI_KEYS 1

#define UI_DISPLAY_TYPE 5

#define UI_ACTION_CUSTOM_KEY    1999

#define ZHOME_HEAT_HEIGHT 5

#define CONFIGURATION_H

#define Z_MIN_POS -10

#define MULTI_ZENDSTOP_HOMING 0