Hi All,
I have created a movie of exactly what is happening.

You can watch it here. (full screen mode looks best)

www.danthesaxman.com/biab-jabb-error.wmv

I also uploaded the BIAB file here (although this phenomenon happens on any biab I have with a melody in it). I also uploaded my JABB Krontakt multi that I used in this video.

http://danking.weebly.com

Can anyone else replicate this problem?

Dan