I've been having a recurring issue with the '21 version crashing when I regenerate a song. Has happened with multiple styles, multiple instruments. I've updated to the current build (509) and the issue still exists. It may have something to do with regenerating tracks at double or half time, I have a couple of those in there.

The issue is more frequent if I have more than one instrument set at double or half time. I have not noticed the crashing when all instruments are set to normal time. Just wanted to pass this along.