title: Zend Framework -> Zend_Log via application.ini => insert() on a non-object error
body: <p>I am trying to get logging via the application.ini file going and I am getting stuck with an error.</p>
  
  <pre><code>resources.log.db.writerName = "Db"
  resources.log.db.writerParams.db.adapter = "PDO_SQLITE"
  resources.log.db.writerParams.db.dbname = ROOT "/data/tmp.db3"
  resources.log.db.writerParams.db.table = "logs"
  resources.log.db.writerParams.db.columnMap.priority = "priority"
  resources.log.db.writerParams.db.columnMap.message  = "message"
  
  Fatal error: Call to a member function insert() on a non-object in /var/www/libs/zend/library/Zend/Log/Writer/Db.php on line 137
  </code></pre>