java.lang.ArrayIndexOutOfBoundsException: -1
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$ElementStack.popElement(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
	at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
	at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
	at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
	at org.jboss.tools.jsf.web.validation.XHTMLValidator.validate(XHTMLValidator.java:152)
	at org.eclipse.wst.xml.core.internal.validation.core.AbstractNestedValidator.validate(AbstractNestedValidator.java:280)
	at org.eclipse.wst.xml.core.internal.validation.core.AbstractNestedValidator.validate(AbstractNestedValidator.java:85)
	at org.jboss.tools.jsf.web.validation.XHTMLValidator.validate(XHTMLValidator.java:121)
	at org.eclipse.wst.validation.Validator$V2.validate(Validator.java:1159)
	at org.eclipse.wst.validation.internal.ValManager.validate(ValManager.java:704)
	at org.eclipse.wst.validation.internal.ValManager$1.visit(ValManager.java:665)
	at org.eclipse.wst.validation.internal.ValManager.accept(ValManager.java:810)
	at org.eclipse.wst.validation.internal.ValManager.validate(ValManager.java:669)
	at org.eclipse.wst.validation.internal.ValBuilderJob$Visitor.visit(ValBuilderJob.java:299)
	at org.eclipse.core.internal.resources.Resource$2.visit(Resource.java:106)
	at org.eclipse.core.internal.resources.Resource$1.visitElement(Resource.java:65)
	at org.eclipse.core.internal.watson.ElementTreeIterator.doIteration(ElementTreeIterator.java:82)
	at org.eclipse.core.internal.watson.ElementTreeIterator.doIteration(ElementTreeIterator.java:86)
	at org.eclipse.core.internal.watson.ElementTreeIterator.doIteration(ElementTreeIterator.java:86)
	at org.eclipse.core.internal.watson.ElementTreeIterator.doIteration(ElementTreeIterator.java:86)
	at org.eclipse.core.internal.watson.ElementTreeIterator.iterate(ElementTreeIterator.java:127)
	at org.eclipse.core.internal.resources.Resource.accept(Resource.java:75)
	at org.eclipse.core.internal.resources.Resource.accept(Resource.java:104)
	at org.eclipse.core.internal.resources.Resource.accept(Resource.java:88)
	at org.eclipse.wst.validation.internal.ValBuilderJob.fullBuild(ValBuilderJob.java:219)
	at org.eclipse.wst.validation.internal.ValBuilderJob.run(ValBuilderJob.java:178)
	at org.eclipse.wst.validation.internal.ValBuilderJob.runInWorkspace(ValBuilderJob.java:126)
	at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)