I installed GoBetwino, set up the necessary commands, and compiled and linked that code for the Mega. GoBetwino caught all the serial data, and logged it as it was supposed to.
I then changed the board type to Leonardo, and connected the Leonardo. I uploaded the sketch, started GoBetwino and changed the com port to the correct port. No communication with the Leonardo appears in the top window. Opening the Serial Monitor fails, because the COM port (COM10) is in use.
MikMo, what's going on? Any ideas?