title: What Makes Xcode Command-Click (code indexing) Stop Working?
body: <p>My Xcode project has been working fine with the ability to command-click on elements in code (struct type, method call, prototype, enum, etc) and jump to the definition.</p>
  
  <p>Because of dust bunnies, I duplicate the entire project folder. I then get in and clean things up a little. Code builds as expected but then I discover that none of the command click indexes seem to be functional. Command-click on anything (including include files) just beeps at me.</p>
  
  <p>I open the original project in the original project folder and command-click works to find definitions. I copy the old Xcode project file over to the new project folder (replacing the new one) and then in the old project command-click no longer works. It's as if indexing breaks and the only change is where the project is located.</p>
  
  <p>All the files in both Xcode projects resolve (come up when clicked in the project navigator). <strong><em>Command-clicking a variable in code can't find the declaration that is literally 3 lines above.</em></strong></p>
  
  <p>Stumped, ideas welcome.</p>
  
  <p>(I'd show an example but SDK/ADK is covered under NDA)</p>