[flexcoders] ctrl+shift+r shortcut in FB4

[flexcodemonkey]

Anyone know how to get the keyboard shortcut ctrl+shift+R for Open Resource to 
work in Flash Builder 4?!?  Under the Navigate menu in the Flash Perspective 
,there is two menu items.  One is being created by the Flash Navigation.  But, 
I am unable to disable this via customizing the Flash perspective as Flash 
Builder will not let me select OK and save my changed if I unselect Flash 
Navigation.  Hmm...  Really annoying not to have the keyboard shortcut work...