removing those files didn't work. I've tried everything. re-install rename directory - reinstall . I actually have to open the seq file in an earlier version (2013) of ptp to get some generated harmonies from the tc-helicon. That version doesn't crash, but it actually doesn't work very well either. Even though it has a preview - and I enter chords so it knows the key, the harmonies seem random. I can't believe others don't have this problem. can you generate harmonies on your version?? I installed a fix, which i don't remember if it was an earlier version or later but the harmonies worked for one session only once! ALSO - should i start a new thread? importing wav files from Reaper crashes and hangs ptp 2021. the wav files plays fine in windows, but crashes ptp.