#define EXT4_ENABLE_PIN ORIG_E4_ENABLE_PIN

#define HOST_PROMPT_SUPPORT is already enabled i think

  //#define HOST_PROMPT_SUPPORT

//#define HOST_ACTION_COMMANDS

//#define HOST_ACTION_COMMANDS

#define TEMP_0_PIN 15

In both versions the Lines in Repetier\src\boards\STM32F4\HAL.h with #define xy_TIMER_NUM z are identical.

#define SERVO_TIMER_NUM 9

            #define NUM_SERVOS 2

#define EXT0_SELECT_COMMANDS "G1 X352.85+EXT0_X_OFFSET Y338+EXT0_Y_OFFSET F30000\n G1 S1 Y375.9+EXT0_Y_OFFSET\n G1 S1 X327+EXT0_X_OFFSET\n G1 S1 Y338+EXT0_Y_OFFSET "

#define X_MAX_LENGTH 105

#define INVERT_X_DIR 0

#define CONFIGURATION_H

#define CONFIGURATION_H

#define STEPPER_HIGH_DELAY 1

#define X_ENABLE_ON 1

Configuration.h motion settings #define DRIVE_SYSTEM 3 #define XAXIS_STEPS_PER_MM 80 #define YAXIS_STEPS_PER_MM 80 #define ZAXIS_STEPS_PER_MM 80 #define EXT0_STEPS_PER_MM 100 #define EXT0_STEP

#define STEPPER_HIGH_DELAY 1

#define X_ENABLE_ON 1 #define Y_ENABLE_ON 0 #define Z_ENABLE_ON 1

#define NUM_EXTRUDER 1 #define MOTHERBOARD 80 #include "pins.h" // ################## EDIT THESE SETTINGS MANUALLY ################ // ################ END MANUAL SETTINGS ##########