java.lang.IllegalStateException: Unexpected (org.zkoss.poi.hssf.record.UnknownRecord) while looking for DV Table insert pos
	at org.zkoss.poi.hssf.model.RecordOrderer.findDataValidationTableInsertPos(RecordOrderer.java:314)
	at org.zkoss.poi.hssf.model.RecordOrderer.findSheetInsertPos(RecordOrderer.java:100)
	at org.zkoss.poi.hssf.model.RecordOrderer.addNewSheetRecord(RecordOrderer.java:94)
	at org.zkoss.poi.hssf.model.InternalSheet.getOrCreateDataValidityTable(InternalSheet.java:1668)
	at org.zkoss.zss.model.sys.impl.HSSFSheetImpl.getDataValidations(HSSFSheetImpl.java:1115)
	at org.zkoss.zssex.ui.impl.DataValidationHandlerImpl.loadDataValidtionJASON(DataValidationHandlerImpl.java:49)
	at org.zkoss.zss.ui.Spreadsheet.renderProperties(Spreadsheet.java:1666)
	at org.zkoss.zk.ui.AbstractComponent.redraw(AbstractComponent.java:1812)
   ...