title: Could not cast value of type 'Swift.Array<(Swift.String, Swift.String)>' to 'Swift.AnyObject'
body: <p>My <code>swift</code> code look like below</p>
  
  <pre class="lang-none prettyprint-override"><code>Family.arrayTuple:[(String,String)]? = []
  Family.arrayTupleStorage:String?
  Family.arrayTupleStorage:String = (newDir! as NSString).stringByAppendingPathComponent("arrayTuple.archive")
  NSKeyedArchiver.archiveRootObject(Family.arrayTuple! as! AnyObject, toFile: Family.arrayTupleStorage!)
  </code></pre>
  
  <p>I have error massage in console window while building code.</p>
  
  <blockquote>
    <p>'Could not cast value of type 'Swift.Array&lt;(Swift.String, Swift.String)>' (0xcce8098) to 'Swift.AnyObject' (0xcc8f00c).'</p>
  </blockquote>
  
  <p>How can I archive <code>Family.arrayTuple</code> and unarchive <code>Family.arrayTupleStorage</code>?</p>