I have version 3.0.1. I will try the beta one and let you know.
EDIT: That did the trick. It works now but if I add a right column to my content area, or try to add a new div, it will not let me modify the values at all. It places the areas in the layout, but I cannot change width, margins, background image.. etc I input values, hit apply...nothing happens.
In fact, now I played around more with it and when I change the right column that was added, all the changes go to my navigation item even though that one wasn't selected.