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via JIRA by Philippe Laflamme, 2 years ago cannot be cast to
via JIRA by Philippe Laflamme, 1 year ago cannot be cast to
java.lang.ClassCastException: cannot be cast to	at org.obiba.onyx.quartz.editor.questionnaire.ValidationPanel.validateOpenAnswerValidators(	at org.obiba.onyx.quartz.editor.questionnaire.ValidationPanel.validate(	at org.obiba.onyx.quartz.editor.questionnaire.ValidationPanel.(	at org.obiba.onyx.quartz.editor.questionnaire.QuestionnaireListPanel$LinkFragment$3.onClick(	at org.apache.wicket.ajax.markup.html.AjaxLink$1.onEvent(