User warning after change result types

Let me see if I remmember. At first I had a regular "Pass rate for the quiz %" but they I switched to "personality" result option, and made a result set with a Start Range = 0 and End Range = 0
After that I got this when completing the last question in the quiz:
user warning: Invalid use of group function query: SELECT (SELECT count(*) FROM quiz_node_results_answers WHERE result_id = 10) as question_count,(SELECT option_summary FROM quiz_multichoice_user_answers LEFT JOIN quiz_multichoice_answers USING (answer_id) LEFT JOIN quiz_node_result_options ON (result_option = option_id) WHERE result_id = 10 GROUP BY result_option ORDER BY COUNT(result_option) desc LIMIT 1) as result_option in /home/web4you/public_html/site/includes/database.mysql.inc on line 172.