I solved my crashing problem. I hope it works for any of you. I opened Brass 2 in stand alone mode, and in the "Audio and Midi Settings" I didn't have the Pro Tools aggregate I/O box selected, and I see that I can also control the stand-alone module by either selecting MBox2 midi in, or the USB from my KeyStation.
I loaded 3 tracks on pro tools 9, and when it is a CPU hog (27%now), it has recorded and played back some mean trombone solos. I love the bones, the saxes and trumpets? No. But I am just starting to play with it. I might find a way to ,like
I assumed that pro tools or Brass 2 would have automatically hooked the I/O up on their own. So I learn.
Hope it helps anyone,