java.lang.IllegalArgumentException: can't parse argument number: plugins.home
	at java.text.MessageFormat.makeFormat(MessageFormat.java:1420)
	at java.text.MessageFormat.applyPattern(MessageFormat.java:479)
	at java.text.MessageFormat.<init>(MessageFormat.java:363)
	at java.text.MessageFormat.format(MessageFormat.java:835)
	at org.jboss.tools.jsf.web.validation.XHTMLValidator.displaySubtask(XHTMLValidator.java:234)
	at org.jboss.tools.jsf.web.validation.XHTMLValidator.displaySubtask(XHTMLValidator.java:229)
	at org.jboss.tools.jsf.web.validation.XHTMLValidator.validate(XHTMLValidator.java:143)
	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:129)
	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:126)
	at org.eclipse.core.internal.resources.Resource$1.visitElement(Resource.java:85)
	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.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.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.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:95)
	at org.eclipse.core.internal.resources.Resource.accept(Resource.java:52)
	at org.eclipse.core.internal.resources.Resource.accept(Resource.java:124)
	at org.eclipse.core.internal.resources.Resource.accept(Resource.java:108)
	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)
Caused by: java.lang.NumberFormatException: For input string: "plugins.home"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.lang.Integer.parseInt(Integer.java:492)
	at java.lang.Integer.parseInt(Integer.java:527)
	at java.text.MessageFormat.makeFormat(MessageFormat.java:1418)
	... 39 more