Error compiling

Hi, get this error

Arduino: 1.6.7 (Windows 7), Board: “Arduino/Genuino Uno”

…\Documents\Arduino\libraries\Autopilot_Main\Autopilot_Main.ino:4:30: fatal error: SoftEasyTransfer.h: No such file or directory

#include <SoftEasyTransfer.h>
compilation terminated.
exit status 1
Error compiling.

sketch from http://www.instructables.com/files/orig/FCF/5EMJ/I9NDWQZG/FCF5EMJI9NDWQZG.rar

Project http://www.instructables.com/id/Boat-Autopilot/?ALLSTEPS

Anybody can help?

Looks like you need to install SoftEasyTransfer library

Here :https://github.com/madsci1016/Arduino-EasyTransfer/archive/master.zip

Steps on installing libraries: https://www.arduino.cc/en/Guide/Libraries

Thanks, problem solved. Now a new problem

Arduino: 1.6.7 (Windows 7), Board: "Arduino/Genuino Uno"

sketch\Autopilot_GPS.ino.cpp.o: In function `setup':

...\Documents\Arduino\libraries\Autopilot_GPS/Autopilot_GPS.ino:26: undefined reference to `EasyTransfer::begin(unsigned char*, unsigned char, Stream*)'

sketch\Autopilot_GPS.ino.cpp.o: In function `loop':

...\Documents\Arduino\libraries\Autopilot_GPS/Autopilot_GPS.ino:48: undefined reference to `EasyTransfer::sendData()'

collect2.exe: error: ld returned 1 exit status

exit status 1 Error compiling.

sketch http://www.instructables.com/files/orig/FBW/0EZO/I9NDWQZF/FBW0EZOI9NDWQZF.rar