Extension talk:Semantic Gallery

Thanks for emailing me the scripts. It seemed simple enough, however, when I presumed to add: require_once( 'extensions/SemanticGallery/SemanticGallery.php' ); to the end of my LocalSettings.ph file, it resulted in an error, namely: Fatal error: Access to undeclared static property: SMWQueryProcessor::$formats in /wiki/extensions/SemanticGallery/SemanticGallery.php on line 23 What did I do wrong? - Thanks!