Problem creating new Song

You won’t believe it, but after @npudar mentioned the MIDI loop, I thought of the OSC loop. But I kept it to myself, because as the police investigators say: “when you hear hoofbeats, think horse, don’t think zebra”.

This time “zebra” was the right guess and it was not a MIDI loop but a kind OSC loop: is your local host and thus equivalent to and you used the same port 54344 for both the remote client and the GP listening port. Which means that with OSC active you send and received OSC message on your local GP computer, which makes an OSC loop.