[johnforr]

Aha!!!

I think I found it... try this:

Look in the ProTools/Digidesign folder in your Applications, you should find Digidesign CoreAudio Setup in there. Open it (quit all apps first), and you get a window with a Supported Applications option. From there you can remove iTunes from the list.

I've done it and SO FAR it has solved the quitting problem

Hope this helps.