Originally Posted By: silvertones
Here's a question for you.
Does it always occur at bar 240? Have you tried any other length?

It always occurs at bar 241 if the chord criteria are met that I described in my previous post. Yes, I did regenerate a 10-bar section from bar 235 to bar 245 that involved all the tracks as well as one that involved just one track, and the erroneous chord change occurred both times.
Tom Levan (pronounced La-VAN)
BiaB 2021 Win UltraPAK Build 833, Xtra Style PAKs 1-11, RB 2021, Windows 10 Pro 64-bit, Intel Q9650 3 GHz, 8 GB RAM, 500 GB SSD & 2 TB HDD, Tracktion 6 & 7 (freebies), Cakewalk, Audacity, MuseScore 2.1 & 3.4, Synthesizer V