ckfinder_gecko.js File Error

Take a look in the Firebug at the result of an ajax call made by CKFinder. The server connector should send a valid XML message, could you paste here what did it send?
Make sure that your server does not append anything automatically to each response, which happens for example when debugging is enabled.
Make sure that you didn't make a mistake in the configuration file (backup your current configuration file and start customizing it again using the configuration file provided with CKFinder).

I am getting the same problem.

What I have works great locally on my WAMP setup. I have replaced the paths everywhere on the server, but CKFinder fails on the live server. Any ideas would be very appreciated.

this.t("Connector/Error/@number") has no properties

Here is the Response:

<?xml version="1.0" encoding="utf-8"?><br /><b>Warning</b>: session_start() [<a href='function.session-start'>function.session-start</a>]: Cannot send session cache limiter - headers already sent (output started at /home/accountnameremoved/public_html/ckfinder/core/connector/php/php5/Core/Xml.php:52) in <b>/home/accountnameremoved/public_html/ckfinder/config.php</b> on line <b>31</b><br /><Connector resourceType="Images"><Error number="0" /><ConnectorInfo enabled="true" s="" c="" thumbsEnabled="true" /><ResourceTypes><ResourceType name="Images" url="/uploads/images/" allowedExtensions="bmp,gif,jpeg,jpg,png" deniedExtensions="" defaultView="Thumbnails" hasChildren="false" acl="255" /></ResourceTypes></Connector>

<b>Warning</b>:  session_start() [<a href='function.session-start'>function.session-start</a>]: Cannot send session cache limiter - headers already sent 

Add

session_start();

straight at the beginning of config.php, after opening tag ("<?php").
Make sure that there is no white space at the beginning before "<?php". Make sure that you have removed any code that sends headers from the CheckAuthentication function.