title: Yeaoman Grunt imagemin Fatal error: Cannot read property 'contents' of undefined
body: <p>I keep on getting when running <code>grunt build</code> even with a clean Yeoman angular build: <code>yo angular whatever</code>.</p>
  <blockquote>
  <p>Warning: Running &quot;imagemin:dist&quot; (imagemin) task</p>
  <p>Fatal error: Cannot read property 'contents' of undefined</p>
  </blockquote>