Thread:Project:Support desk/Updateing old MediaWiki fails on DBUpdate Fatal error: Class 'MysqlUpdater'

Hello,

i am updateing from a old mediawiki installation: 1.9.3 to the current 1.19.

I am encountering this problem upon the database upgrade portion. I see an animated progess circle and a texbox way below with the following information:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">  MediaWiki VERSION   html, body { color: #000; background-color: #fff; font-family: sans-serif; text-align: center; }

h1 { font-size: 150%; }		

MediaWiki VERSION LocalSettings.php not found. Please  complete the installation and download LocalSettings.php.

Fatal error: Class 'MysqlUpdater' not found in /home/milf/www/htdocs/includes/installer/DatabaseUpdater.php on line 120

I am running on RHEL 6, [root@vmh-aibll htdocs]# rpm -qa |grep mysql mysql-server-5.1.61-4.el6.x86_64 php-mysql-5.3.3-14.el6_3.x86_64 mysql-libs-5.1.61-4.el6.x86_64 mysql-5.1.61-4.el6.x86_64 php-common-5.3.3-14.el6_3.x86_64 php-cli-5.3.3-14.el6_3.x86_64 php-xml-5.3.3-14.el6_3.x86_64 php-mysql-5.3.3-14.el6_3.x86_64 php-soap-5.3.3-14.el6_3.x86_64 php-pear-1.9.4-4.el6.noarch php-pdo-5.3.3-14.el6_3.x86_64 php-5.3.3-14.el6_3.x86_64 php-gd-5.3.3-14.el6_3.x86_64 php-pecl-apc-3.1.9-2.el6.x86_64

help will be appreciated