title: Fatal error: Class 'Mage_Softprodigy_Multipleaddtocart_Helper_Data' not found in /html/app/Mage.php on line 547
body: <p>A bit of background -- We didn't start noticing this error until after we upgraded from Magento 1.7 to 1.9. After the upgrade this error message would occur throughout our system.log but showed no sign of causing a significant problem on the front-end until we tried creating new admin panel <strong>user roles</strong>.</p>
  
  <p>The system.log would report:</p>
  
  <pre><code>2015-12-09T16:50:28+00:00 ERR (3): Warning: include(): Failed opening 'Mage/Softprodigy/Multipleaddtocart/Helper/Data.php' for inclusion (include_path='/chroot/home/xxxx/xxxx.com/html/app/code/local:/chroot/home/xxxx/xxxx.com/html/app/code/community:/chroot/home/xxxx/xxxx.com/html/app/code/core:/chroot/home/xxxx/xxxx.com/html/lib:.:/usr/share/pear:/usr/share/php')  in /chroot/home/xxxx/xxxx.com/html/lib/Varien/Autoload.php on line 93
  </code></pre>
  
  <p>Inside <strong>app/code/local/Softprodigy/Multipleaddtocart/Helper</strong> we find Data.php with proper permissions and unedited, original code from the vendor.</p>
  
  <h2><strong>Logging into the Magento Admin Panel</strong></h2>
  
  <p><strong>System > Configuration</strong></p>
  
  <p>We see the Softprodigy label with the Multicart Products tab on the left-side navigation bar.</p>
  
  <p><strong>System > Configuration > Advanced > Advanced</strong></p>
  
  <p>A <a href="http://www.smashingmagazine.com/2012/03/basics-creating-magento-module/#sanity-check-is-the-module-enabled" rel="nofollow">Sanity Check</a> shows the inclusion of this Multipleaddtocart extension. Enable/Disable seems effective for both the global and granular scope.</p>