title: Bad BSON Document: illegal CString with Node MongoDB driver
body: <p>I'm receiving:</p>
  
  <p><code>[Error: Bad BSON Document: illegal CString]</code></p>
  
  <p>When using the Node MongoDB driver while iterating over one of my collections with <code>Cursor.each</code>. It seems to make some of my documents disappear, and not found in the collection, even though they were individually accessible when I look for them using <code>Collection.findOne()</code>.</p>
  
  <p>Does this mean that my data is corrupted in some way?</p>