Yep, I'm experiencing the exact same problem. Also, I know that the signal path is working because I'm able to get the click track/metronome output to the external amp, but the music does not come through. The only thing I'm doing is turning off the Helix after a day of practice and the next morning, the bug presents itself and I'm unable to hear the Showcase track. I'm running the current 1.2 release.