Hello Akria,
Your libary gives this error, it misses the HardHalfDuplexSerial.h:
C:\Users\michel\Documents\Arduino\libraries\DynamixelArduino-master\examples\DynamixelMxMonitorBlock\DynamixelMxMonitorBlock.ino:32:34: fatal error: HardHalfDuplexSerial.h: No such file or directory
#include <HardHalfDuplexSerial.h>
^
compilation terminated.
exit status 1
Error compiling.