title: Kotlin - Error: Could not find or load main class _DefaultPackage
body: <p>I followed the Kotlin tutorial for eclipse here : <a href="https://kotlinlang.org/docs/tutorials/getting-started-eclipse.html" rel="noreferrer">Getting Started With Eclipse Luna</a></p>
  
  <p>However, I'm running into this error: </p>
  
  <pre><code>Error: Could not find or load main class _DefaultPackage
  </code></pre>
  
  <p>Anyone who knows to get around this?</p>