Mac,

I fired an e-mail off to support. This is a huge divergence from 2009 in terms of what the real-tracks do. In 2009, if you tested or auditioned parts, what I mean is you went:
Drums-----Bass,
Then Rhythmn Guitar, all the previous parts played too, re-generated, but they played.'
Now just the drums play, Bass for 2 bars then you have to tell BB to re-Generate each part.
De-Fraggin now for giggles, this machine is an I7 , 1.5TB drives, she's a monster with System Mechanic minding the internal P's and Q's. I hope they can fix this....

JT

http://johntafaromusic.blogspot.com