Recently I received an email from a customer. She was dismayed that all the icons on her post editor were gone. Instead of seeing the normal visual editor, she saw a white box with no controls. What happened?
I looked at the usual suspects, the plugins and the themes. But with all the plugins turned off and a default WordPress theme selected the error persisted.
I did some research and hit upon the solution. I added the following to the bottom of the wp-config.php file just before the require_once line:
define(‘CONCATENATE_SCRIPTS’, false );
The problem is fixed!
Why Did it Work?
By default JavaScript files are concatenated into one URL in the WordPress administration area. Sometimes that just doesn’t work out well. In those cases the above code will turn that feature off.
