title: Xcode quits unexpectedly every time I open my project
body: <p>I am just opening my xcode , when i open my current project its showing the warning like "xcode quit unexpectedly " with 3 options "Ignore","Report" and "Reopen",when i click reopen it will open xcode window and again automatically it will close and showing the same warning.</p>
  
  <p>Why this is happening am not getting am a newbie,if anyone having idea on this plz help me out. if i open any other projects then its opening no issues...issue is with my Current App.</p>
  
  <p>versions :<br>
  xcode is 4.3.1<br>
  mac OS X version is 10.7.3<br>
  Please tell me why its happening like this.</p>