java.lang.IndexOutOfBoundsException on HSSFRow.getRowStyle()

java.lang.IndexOutOfBoundsException: Index: 12345, Size: 73
	at java.util.ArrayList.RangeCheck(ArrayList.java:547)
	at java.util.ArrayList.get(ArrayList.java:322)
	at org.zkoss.poi.hssf.model.WorkbookRecordList.get(WorkbookRecordList.java:50)
	at org.zkoss.poi.hssf.model.InternalWorkbook.getExFormatAt(InternalWorkbook.java:1021)
	at org.zkoss.poi.hssf.usermodel.HSSFRow.getRowStyle(HSSFRow.java:590)
	at org.zkoss.poi.hssf.usermodel.HSSFRow.getRowStyle(HSSFRow.java:40)
	at org.zkoss.zss.range.impl.imexp.AbstractExcelImporter.importRow(AbstractExcelImporter.java:404)
	at org.zkoss.zss.range.impl.imexp.AbstractExcelImporter.imports(AbstractExcelImporter.java:151)
	at org.zkoss.zss.range.impl.imexp.ExcelImportAdapter.imports(ExcelImportAdapter.java:46)
	at org.zkoss.zss.range.impl.imexp.AbstractImporter.imports(AbstractImporter.java:54)
	at org.zkoss.zss.ui.Spreadsheet.getSBook(Spreadsheet.java:623)
	at org.zkoss.zss.ui.Spreadsheet.getSelectedSSheet(Spreadsheet.java:817)
	at org.zkoss.zss.ui.Spreadsheet.doInvalidate(Spreadsheet.java:4492)
	at org.zkoss.zss.ui.Spreadsheet.invalidate(Spreadsheet.java:3842)
	at org.zkoss.zss.ui.Spreadsheet.setSrc(Spreadsheet.java:857)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.zkoss.zk.ui.metainfo.Property.assign0(Property.java:284)
	at org.zkoss.zk.ui.metainfo.Property.assign(Property.java:169)
	at org.zkoss.zk.ui.metainfo.ComponentInfo.applyProperties(ComponentInfo.java:729)
	at org.zkoss.zk.ui.impl.AbstractUiFactory.newComponent(AbstractUiFactory.java:106