Hi, Michael!
Well, I actually read what I wrote and I didn't explained this too well (and I just realized that when I wrote to Tech Support, I didn't explained it too well either):
My Pro 40 as a hardware works fine, it can recognize that signal is going through. Here's the thing: I was about to listen to something that one of the musicians brought to the studio, when I realized that the "Active Monitor Pad" option was on, when I never did. I click on it and turned it off, and I think this caused the whole problem, because when I go to the Sound settings on System Preferences, the Pro 40 is recognized only as input, and for some reason, it does't show an output, therefor, it doesn't let me record, because it's trying to recognize the output.
I've tried to uninstall it (removing all the tools that were installed guided by the troubleshoot page on Focusrite), reinstalled it, and I almost came to a point of formating the internal HD and reinstalling Mac on my laptop. I also went to http://beta.focusrite.com/ and downloaded the beta version of Saffire Mix Control 3.2b1, since it said that it said that it was fixing some stuff like "unable to read from hardware", and "dissappearing outputs on the pro 40..." but no luck, so I was hoping that the DiceTool might work, but I guess it doesn't, maybe.
I'm truly sorry if I'm being stuborn about this, but I REALLY need help here as quick as possible. Like I said, I contacted Tech Support at the link you gave me. My case # is 193689 and if you can, please, put a rush on it, beacuse the band I'm recording right now, they are trying to take a demo with them to the States (I'm from El Salvador, by the way) to try their luck over there and I'm 2 songs from finishing the whole 5 EP.
If there's nothing you can do, well I do appreciate the time you took to respond to this. I'll try to wait
Thanks again, man
Mario N. Pérez
email: mario.perez@angelicalrecords.com