Yesterday Flash Builder 4.6 was working fine. Then something that I did late yesterday has rendered the Flash Builder editor "brain dead". It is little more that a type writer. It does not go to the definition of variables when f3 is press. Hightlighting a variable does not hightlight all occurances of that variable. The Outline view is empty. It does not provide a combo box of possible functions when the period (.) is pressed. As I said it is little more than a typewriter. I have uninstalled it along with eclipse, rebooted and re-installed both Eclipse and Flash Builder and still the same. I have a co-worker who just installed Flash Builder for the first time yesterday and she is experiencing the very same thing. What is going on and how do I/we fix it?