Thread:Extension talk:OpenGraphMeta/Mediawiki version required?

Hi all, I have just tested this extension on a 1.15.4 MediaWiki installation and I had an error reporting:

Call to undefined method OutputPage::getTitle in C:\server\xampplite\htdocs\wiki\extensions\OpenGraphMeta\OpenGraphMeta.php on line 65

Installation data:


 * MW 1.15.4
 * PHP 5.3.0
 * MySQL 5.1.41

Extensions installed:


 * MultipleUpload 1.0
 * Cite r.37577
 * DSADate 1.0
 * DynamicPageList2 1.7.4
 * ImageMap r.35980
 * ImageSizeInfoFunctions 1.0.1
 * MultipleUploadToolboxItem 0.1
 * ParserFunctins 1.1.1
 * PropertyTable2 1.2.1
 * StringFunctions 2.0.1
 * SyntaxHighlight
 * GoogleTranslator 0.1
 * NewUserEmailNotification 1.5.1

Moreover, inspecting the code, it seems that the extension Description2 is required for properly description tag be evaluated. Is my assumption correct? TIA