Here's my situation. I just built a custom post system running OS X 10.7.4. Everything runs smoothly on it so far. Adobe CS6, and every other app I own runs like butter - no issues.
I'm running Symphony 184.108.40.206 with no extra hardware so far (on my new desktop). I used to run it on my older Macbook Pro without any problems.
The issue I'm running into is that Symphony crashes every time I open it and it crashes specifically when it's trying to initialize audio drivers. I noticed that the Avid utilities folder has Mbox drivers for Lion in them and was wondering if installing those would solve my problem.
Do I need a physical Mbox hooked up to my desktop? Would a PCI card from RME or some other manufacturer work just as well? Would an Mbox mini suffice? What about the cheap off brands you can get at Fry's or Micro Center?
An associate of mine mentioned that Avid needs an audio card typically on a desktop in order to run. I never ran into this issue as I've always used Avid on Mac laptops in the past. My guess is the on-board audio chip in the Macbook Pro's registered as a dedicated audio card?