Questionnaire is broken in Moodle 2.0

error message:
popup_form() has been deprecated. Please change your code to use $OUTPUT->select($select).

• line 3281 of \lib\deprecatedlib.php: call to debugging()
• line 2835 of \lib\weblib.php: call to popup_form()
• line 140 of \mod\questionnaire\locallib.php: call to navmenu()
• line 57 of \mod\questionnaire\view.php: call to questionnaire->view()