title: Getting DatabaseException 'not authorized for query on db.collection' (code = 13) after mongo3 upgrade
body: <p>I use the free MongoLab, and my database was upgraded to Mongo 3 over the weekend and now my client won't connect.  I keep getting a 'not authorized for query on db.collection.' error.</p>
  
  <p>Mongolab says I should use Mongo 3 compatible driver (<a href="http://docs.mongodb.org/manual/release-notes/3.0-compatibility/#driver-compatibility-changes" rel="nofollow">http://docs.mongodb.org/manual/release-notes/3.0-compatibility/#driver-compatibility-changes</a>).  I am using the scala ReactiveMongo client, version 0.11.7, which is supposed to support Mongo 3.</p>