java.lang.IndexOutOfBoundsException
	at org.apache.xmlbeans.impl.store.Xobj.removeElement(Xobj.java:2188)
	at org.apache.xmlbeans.impl.store.Xobj.remove_element(Xobj.java:2218)
	at org.openxmlformats.schemas.drawingml.x2006.chart.impl.CTStrRefImpl.unsetStrCache(Unknown Source)
	at org.zkoss.poi.xssf.usermodel.charts.XSSFChartTextSource.renameSheet(XSSFChartTextSource.java:58)
	at org.zkoss.poi.xssf.usermodel.XSSFChart.renameSheet(XSSFChart.java:454)
	at org.zkoss.poi.xssf.usermodel.XSSFChart.renameSheet(XSSFChart.java:421)
	at org.zkoss.poi.xssf.usermodel.XSSFChartX.renameSheet1(XSSFChartX.java:78)
	at org.zkoss.poi.xssf.usermodel.XSSFChartX.renameSheet(XSSFChartX.java:74)
	at org.zkoss.zssex.model.impl.SheetCtrlImpl.whenRenameSheet(SheetCtrlImpl.java:29)
	at org.zkoss.zss.model.sys.impl.XSSFSheetImpl.whenRenameSheet(XSSFSheetImpl.java:1270)
	at org.zkoss.zss.model.sys.impl.XSSFBookImpl.setSheetName(XSSFBookImpl.java:258)
	at org.zkoss.zss.model.sys.impl.XRangeImpl.setSheetName(XRangeImpl.java:2763)
	at org.zkoss.zss.api.impl.RangeImpl.setSheetName(RangeImpl.java:642)
	at org.zkoss.zss.api.impl.Issue400Test.testZSS482(Issue400Test.java:1217)
	at org.zkoss.zss.api.impl.Issue400Test.testZSS482(Issue400Test.java:1211)
	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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)