Ошибка 500 в Joomla Quiz Deluxe - Общие вопросы по расширениям Joomla

Добрый день!
При входе в создание вопроса компонента Joomla Quiz Deluxe выскакивает следующее сообщение и ошибка 500

500 Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=' SQL=SELECT COUNT(*) FROM `#__quiz_t_question` AS `a` LEFT JOIN `#__quiz_t_qtypes` as `b` ON b.c_id = a.c_type LEFT JOIN `#__quiz_t_quiz` as `c` ON a.c_quiz_id = c.c_id LEFT JOIN `#__extensions` as `e` ON e.element = b.c_type WHERE e.folder = "joomlaquiz" AND e.type = "plugin"
Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=' SQL=SELECT a.*, b.c_qtype as qtype_full, c.c_title as quiz_name,e.enabled FROM `#__quiz_t_question` AS `a` LEFT JOIN `#__quiz_t_qtypes` as `b` ON b.c_id = a.c_type LEFT JOIN `#__quiz_t_quiz` as `c` ON a.c_quiz_id = c.c_id LEFT JOIN `#__extensions` as `e` ON e.element = b.c_type WHERE e.folder = "joomlaquiz" AND e.type = "plugin" ORDER BY c_id asc LIMIT 0, 20
Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=' SQL=SELECT COUNT(*) FROM `#__quiz_t_question` AS `a` LEFT JOIN `#__quiz_t_qtypes` as `b` ON b.c_id = a.c_type LEFT JOIN `#__quiz_t_quiz` as `c` ON a.c_quiz_id = c.c_id LEFT JOIN `#__extensions` as `e` ON e.element = b.c_type WHERE e.folder = "joomlaquiz" AND e.type = "plugin"

В чем может быть дело, кто подскажет?

Косяк в базе данных был
достаточно изменить кодировку у quiz_t_qtypes на utf8_unicode_ci и все