title: Magento Error: Class_Magestore_Magenotification_Helper_Data not found
body: <p>Using Magento in admin, when I click the configuration tab, I get the following error:  </p>
  
  <pre><code>"Fatal error: Class 'Magestore_Magenotification_Helper_Data' not found in."
  </code></pre>
  
  <p>Does anyone know why this would happen and how to fix it?</p>