Magento 1.4 Problem Solving – JavaScript Files Are Not Referenced Properly

We recently posted solutions to the most common problems people are having with Magento 1.4 (whether you are upgrading your Magento installation or starting with a fresh Magento 1.4 installation).

Another very common problem is when JavaScript files aren’t referenced properly – which creates a bunch of errors and functionality problems.

For example, some JavaScript files may be referenced in this way:

http://storeurl.com/chroot/home/accountname/storeurl.com/html/js/scriptaculous/slider.js

Instead of simply this:

http://storeurl.com/js/scriptaculous/slider.js

(Of course the folder structure will be different based on your particular server configuration.) This bug is caused by a feature in Magento 1.4 that merges all JavaScript files.

Follow these simple steps to fix the problem:

1. Go to System>Configuration and click on the “developer” tab all the way at the bottom of the left column.

2. Then under “JavaScript Settings” select “No” for “Merge JavaScript Files (beta)”.

Important! Follow These Steps If You Have Problems Accessing The Admin:

Once you followed the steps above, everything inside /var/sessions/ and /var/cache and (if applicable) /app/code/core/Zend/Cache/ must be deleted. Otherwise you get this error when you try to log into the admin:

Fatal error: Call to undefined method Mage_Admin_Model_Observer::actionPostDispatchAdmin() in /public_html/app/code/core/Mage/Core/Model/App.php on line 1207

I hope this helps!