Xcode 4: Auto-complete & Jump to Definition broken in my Xcode 3 Project

Question

My project was created in Xcode 3, I\'m opening it in Xcode 4 and notice the following:

• \'Jump to Definition\' no longer works with my own symbols

Answer 1

What worked for me when i lost xcodes super nice code hinting was:

Window(menu) -> Organizer(menu) -> Projects(tab)

then

Press delete Derived Data (this is the same as going to the folder and deleting it manually)

BUT!!!!! at this step dont rebuild but shut down xcode and reopen of the project. This worked for me.