Thread:Extension talk:WikiSEO/incompatible with mediawiki 1.20.2

This extension doesn't survive the upgrade to mediawiki 1.20.2. It gives the following error: Strict Standards: call_user_func_array expects parameter 1 to be a valid callback, non-static method WikiSEO::modifyHTML should not be called statically in /var/www/html/university/includes/Hooks.php on line 216