An error occurs when simulating if you select the core/ Watch instead of the debug
line in Watch xod/debug/
XOD_DEBUG_SERIAL.print(F("+XOD:"));
line in Watch xod/core/
DEBUG_SERIAL.print(F("+XOD:"));
The two appear in the search 
ps: To avoid possible error, delete the folder of previous version xod/core in __lib__