title: Yii flash messages doesn't work after redirect if set custom sessions path
body: <p>How can i fix problem with flash messages?
  If sessionPath set by default, flash works good, but if I set it in config e.g.</p>
  
  <pre><code>'session' =&gt; array (
      'savePath' =&gt; '../tmp/sessions',
  ),
  </code></pre>
  
  <p>flashes doesn't work after redirect anymore.</p>
  
  <p>P.S. Sorry for my English.</p>