title: Unhandled event loop exception in plugin org.eclipse.ui
body: <p>I recently installed/updated eclipse environment.  When I try to compile the code I'm getting the error as:</p>
  
  <blockquote>
    <p>Unhandled event loop exception </p>
  </blockquote>
  
  <p>and says the error is in the <code>org.eclipse.ui</code> plugin-in.</p>
  
  <p>Can any one help me on this?</p>