when the SD card is inserted, there is only the "Back" menu item? on the full graphic smart controller..
#ifndef SDSUPPORT // Some boards have sd support on board. These define the values already in pins.h
#define SDCARDDETECTINVERTED 0
and this is the code i am using...(repetier firmware)
Comments
See if it lists files when it connects or what it says like failing to mount sd card.