I've integrated FCKeditor 2.6.4 with my new mediawiki 1.14.0
Actually this is very simple to integrate the FCKeditor extension with mediawiki but i can't find any tutorial that describe more detail about how to integrated this clearly.

I assume you already have mediawiki installed on the server and running.

Download FCKeditor extensions for Mediawiki Latest Version

Login into your server

[code]#cd /home/mediawiki/public_html
#wget http://mediawiki.fckeditor.net/nightly/svn/mediawiki_fckeditor_ext_N.tar.gz

This is the fastest way to upgrade/update Mediawiki old version to the Latest Version 1.14.0

I've mediawiki installed on the server with 1.6.x version so i just want to upgrade it to the latest version.

First We need to backup mediawiki files and DB.
You need to change the server path to your server own path.
Login into the server.

Backup mediawiki web files

[code]#cd /home/mediawiki/
#tar -cf mediawiki.tar public_html
#cp mediawiki.tar /root[/code]

Backup mediawiki MySQL DB

[code]#cd /root

What is MediaWiki?

A Wiki is a web application that allows users to create and edit Web Page content using a Web Browser. The term Wiki also refers to the collaborative software used to create such a website, also known as Wiki Software. Wiki Software is usually implemented as a script that runs on a web server with the Wiki content stored in a relational database management system such as MySQL.

What is FCKeditor?

I just tried to install fresh MediaWiki and found this error when i finished installing MediaWiki.

Here is the error when we hit http://yourwiki.com
You can see the error for the first line in your wiki

[code]Warning: Invalid argument supplied for foreach() in /usr/home/wowwiki/public_html/includes/Setup.php on line 154[/code]

To Fixed/Removed this line, we can just simple edit the setup.php script on the line 154