#define MAX_ACCELERATION_UNITS_PER_SQ_SECOND_X 1000

#define ORIG_X_ENABLE_PIN       14

#define Z_PROBE_Z_OFFSET 0

#define FEATURE_CONTROLLER 11

from the repetier's configuration, I've selected this #define FEATURE_CONTROLLER CONTROLLER_SMARTRAMPS to enable the LCD. Any thoughts? Thanks in advance.

#define BED_LEVELING_REPETITIONS 5

#define FEATURE_CONTROLLER 11

#define SDCARDDETECT -1

#define FEATURE_CONTROLLER 2

#define SDCARDDETECT 49 // sd card detect as shown on drawing

#define X_MAX_LENGTH 200

#define CONFIGURATION_H

#define PRINTLINE_CACHE_SIZE 32   

#define PRINTLINE_CACHE_SIZE 32   ????  what can this be increased to on the DUE

#define EEPROM_MODE 2

You made my day!! I just changed: #define EXT0_TEMPSENSOR_PIN THERMOCOUPLE_0_PIN

      - 2016-11-25, 14:24; #define EXT0_TEMPSENSOR_TYPE 13 (war 14), Umbau auf PT-100 am Hotend

#define ENDSTOP_PULLUP_X_MIN true

If you know a few moves that show this - you need some before to fill up move buffer - you can try debugging it with//#define DEBUG_QUEUE_MOVE

#define ENDSTOP_PULLUP_X_MIN true