Are you wondering why your F1, F2, F3 function keys are not working since you upgraded? I mean F1 used to mean “shuffle mode” in Pro Tools, now it dims my screen. I used to have a fancy shortcut programed for F8, now it starts iTunes.
The cure could be as simple as a system preference on your mac. Just go to the Apple menu (top left) then navigate to system preferences, keyboards and then make sure that the “Use all F1, F2…” is unchecked. You should be back in the business of flying through Pro Tools shortcuts with the greatest of ease.