title: Mongodb save create new collection
body: <p>For some strange reason, I cannot create a new collection. Here is what I did:</p>
  
  <pre><code>use newdb
  switched to db newdb
  db.getCollectionNames()
  [ ]
  db.teams.save({country:"Ukraine",GroupName:"D"})
  WriteResult({
      "nInserted" : 0,
      "writeError" : {
          "code" : 18825,
          "errmsg" : "couldn't create file /data/db/newdb.ns"
      }
  })
  </code></pre>
  
  <p>I could save to any other DB or collections that I've already created however.</p>
  
  <p>Any ideas?</p>