Symphony.

Missing argument 1 for AdministrationPage::__construct(), called in C:projectsapprovalextensionssection_schemascontentcontent.list.php on line 74 and defined     C:projectsapprovalsymphonylibtoolkitclass.administrationpage.php line 19

    14          15      var $_navigation;   16      var $_Parent;   17      var $_context;  18          19      function __construct(&$parent){     20          parent::__construct();  21              22          $this->Html->setElementStyle('html');