title: xcode6 linker command failed with exit code 1 (use -v to see invocation)
body: <p>My app runs fine on a real device, but when i'm trying to run it on a simulator it gives me this error. Can anyone help me understand what's this error is ?</p>
  
  <blockquote>
    <p>ld: in '/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/lib/libextension.dylib', missing required architecture x86_64 in file /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/lib/libextension.dylib (3 slices) for architecture x86_64
        clang: error: linker command failed with exit code 1 (use -v to see invocation)</p>
  </blockquote>