Shocked...
Has ProTools ever NOT been broken by even the most minor of OS updates? What is it in their program that makes it so fragile?
For as long as I can remember, Avid(Digidesign) hasn't had a version of Pro Tools that readily worked with a new OS. Rather than wait the usual 3 to 6 months for an update, I've taken the liberty of transitioning to Logic Pro. It works in Snow Leopard, and every Dev Preview build of Lion, including the GM.