I reported this problem four days ago and haven't gotten a response yet. I tried to build a song using BERLIN.STY Berlin Traditional Polka. My song contains 188 measures, and has drums, guitar, accordion (which I mute), and bass. The bass track is #541, Bass, Electric, Pop Sw 190. Every time I play or attempt to regenerate this song, the bass stops playing at measure 127. All other instruments continue. I have tried regenerating just that track, and changing the instruments. Other instruments that I substitute also stop at measure 127. Any ideas about what may have happened?