MediaWiki 1.15.2 Installation

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Fatal error: require_once() [function.require]: Failed opening required '/home/content/84/4241084/html/software/mediawiki-1.15.2/maintenance/updaters.inc' (include_path='.:/usr/local/php5/lib/php') in /home/content/84/4241084/html/software/mediawiki-1.15.2/config/index.php on line 252