java.lang.StringIndexOutOfBoundsException: String index out of range: -3477
        at java.lang.AbstractStringBuilder.substring(AbstractStringBuilder.java:881)
        at java.lang.StringBuilder.substring(StringBuilder.java:55)
        at org.netbeans.modules.xml.xam.dom.DocumentModelAccess.getXmlFragmentInclusive(DocumentModelAccess.java:171)
        at org.netbeans.modules.bpel.refactoring.Element.getPosition(Element.java:119)
        at org.netbeans.modules.refactoring.spi.RefactoringElementsBag.isGuarded(RefactoringElementsBag.java:198)
        at org.netbeans.modules.refactoring.spi.RefactoringElementsBag.add(RefactoringElementsBag.java:106)
        at org.netbeans.modules.bpel.refactoring.Deleter.prepare(Deleter.java:127)
        at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare2(AbstractRefactoring.java:406)
        at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare(AbstractRefactoring.java:390)
        at org.netbeans.modules.refactoring.api.AbstractRefactoring.prepare(AbstractRefactoring.java:207)
        at org.netbeans.modules.refactoring.spi.impl.ParametersPanel$Prepare.run(ParametersPanel.java:787)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:573)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1005)