I'm also on OS version 1.06 (which as far as I know, was the latest available.) Just yesterday I was demonstrating for someone and encountered a situation where the keyboard wouldn't let me select another style. I know if you hold a rhythm button down too long, it can activate a temporary "lock." Perhaps that's what happened in this case, but a bit disconcerting. I never did figure out what went wrong, I ended up rebooting the board.

Another point of frustration... One of the performances I created myself mutes all but two of the style tracks. When I subsequently select a different style, most of the style tracks remain muted. So I have to open the part mixer and manually unmute them. That's a lot of scrolling and pushing on the rotary wheel. Is there a shortcut to unmute all style tracks, or to make it so that when I select a style it defaults to its factory settings for tempo, voicing, track balance, etc.? Thanks in advance! -Ted