1) Ajouter la table ConfigLanguages :
CREATE TABLE `ConfigLanguages` (
  `ConfigLanguageID` mediumint(8) UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
  `ConfigLanguageName` varchar(255) NOT NULL,
  `ConfigLanguageLang` char(2) NOT NULL,
  `ConfigLanguageValue` mediumtext NOT NULL,
  KEY `ConfigLanguageLang` (`ConfigLanguageLang`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

2) MAJ fichiers php/js/css