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

I fixed the problem by removing derived data in th Organizer, running touch MyProject.xcodeproj/project.pbxproj and re-opening the project. After re-opening it, it started indexing and then it was working again.