Hi,

after Quizz questions use the send button and 

Fatal error: Cannot use object of type pear_ResultSet as array in
/modules/Quizzard/action.scorequiz.php on line 18
On the result page

Solved by :
 
$query = 'SELECT * from '.cms_db_prefix().'module_qz_quizzes where quiz_id=?';
//$quiz = $db->Execute($query,array($params['quiz_id']));// commet this line
$quiz = $db->Execute($query,($params['quiz_id']));