all the caches have been cleared, when I try to edit a survey I've got :
<i>parser error @ extension/ezsurvey/design/standard/templates/survey/edit.tpl:107[0]
Unterminated tag "survey_question_edit_gui" does not match tag "section"</i> in the error log
and
<i>Function "survey_question_edit_gui" is not registered</i> in the warning log