title: fatal error: file has been modified since the precompiled header
body: <p>Checked all of the question shown in image but nothing works out.
  <img src="https://i.stack.imgur.com/Kf6zr.png" alt="enter image description here"></p>
  
  <p>In xcode 5 I m getting this issue </p>
  
  <blockquote>
    <p>fatal error: file '/Applications/Xcode
    2.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/System/Library/Frameworks/UIKit.framework/Headers/UIApplication.h'
    has been modified since the precompiled header
    '/Users/administrator/Library/Developer/Xcode/DerivedData/ModuleCache/220IXKWL5NEDF/UIKit.pcm'
    was built note: after modifying system headers, please delete the
    module cache at
    '/Users/administrator/Library/Developer/Xcode/DerivedData/ModuleCache/220IXKWL5NEDF'
    1 error generated.</p>
  </blockquote>
  
  <p>What could be the issue??? Any help ld be greatly appreciated. </p>