I am having an issue in FB4 where some classes are not accessible through hyperlink navigation (Command-Space) or Open Declaration (F3). The classes ARE available through Open Resource (Shift-Command-R) and the project compiles fine when I use them.
What's especially strange is that only SOME of the classes in each packager are available, but some are not. And the same holds true for auto-complete, i.e. if I begin an import statement, not all of the classes will not be available for auto-complete.