Okay, so I was bored one time and I download Pro Tools 6, I tried opening it up and got that ever so common 1119 error, but that's just because I didn't have any sort of hardware hooked up. It's now a couple months later and I'm going to buy an mBox, I've decided to get one off of eBay, cause that way I save money. My issue is that I'm trying to decide if I should get the ones that are older versions of pro tools and use PT6 which I had already downloaded, I wonder because they are cheaper. I'm just concerned that I'll get it and then the PT6 which I have will not work for some reason and I'll have to spend more to get the new version. I have an 800mhz flat screen iMac with the latest version of X installed. If someone could just tell me what will work and what wont that would be great. Also I plan on getting the Behringer UB2222FX mixer, if anyone cares to comment on that item that would be cool.