This happens to me every two or three weeks. The selection tool just disappears from my Keyboard configuration, meaning that my a button ceases to work. I then enter the keyboard configuration to assign it again but it's not possible to assign anything to the a button. The a button does figure next to the action but not on the keyboard itself. It just remains blank and does not work.
I always fix the problem by deleting the three settings files and then reopening Final Cut Pro. But this is annoying as I then have to change several settings all over again.
Is there any explanation to this or does FCP just act weird sometimes?