java.lang.NullPointerException: The lib parameter cannot be null
   at org.openide.util.Parameters.notNull(Parameters.java:89)
   at org.netbeans.spi.project.support.ant.ReferenceHelper.copyLibrary(ReferenceHelper.java:1555)
   at org.netbeans.modules.j2ee.earproject.EarProjectGenerator.copyRequiredLibraries(EarProjectGenerator.java:238)
   at org.netbeans.modules.j2ee.earproject.EarProjectGenerator.access$400(EarProjectGenerator.java:113)
   at org.netbeans.modules.j2ee.earproject.EarProjectGenerator$3.run(EarProjectGenerator.java:209)
   at org.netbeans.modules.j2ee.earproject.EarProjectGenerator$3.run(EarProjectGenerator.java:201)
   at org.netbeans.modules.openide.util.DefaultMutexImplementation.writeAccess(DefaultMutexImplementation.java:293)
   at org.openide.util.Mutex.writeAccess(Mutex.java:299)
   at org.netbeans.modules.j2ee.earproject.EarProjectGenerator.doCreateProject(EarProjectGenerator.java:201)
   at org.netbeans.modules.j2ee.earproject.EarProjectGenerator.access$000(EarProjectGenerator.java:113)
   at org.netbeans.modules.j2ee.earproject.EarProjectGenerator$1.run(EarProjectGenerator.java:164)
   at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:127)
   at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:499)
   at org.netbeans.modules.j2ee.earproject.EarProjectGenerator.createProject(EarProjectGenerator.java:162)
   at org.netbeans.modules.j2ee.earproject.ui.wizards.NewEarProjectWizardIterator.testableInstantiate(NewEarProjectWizardIterator.java:175)
   at org.netbeans.modules.j2ee.earproject.ui.wizards.NewEarProjectWizardIterator.instantiate(NewEarProjectWizardIterator.java:164)
   at org.openide.loaders.TemplateWizard$InstantiatingIteratorBridge.instantiate(TemplateWizard.java:1051)
   at org.openide.loaders.TemplateWizard.handleInstantiate(TemplateWizard.java:605)
   at org.openide.loaders.TemplateWizard.instantiateNewObjects(TemplateWizard.java:439)
   at org.openide.loaders.TemplateWizardIterImpl.instantiate(TemplateWizardIterImpl.java:253)
   at org.openide.loaders.TemplateWizardIteratorWrapper$ProgressInstantiatingIterator.instantiate(TemplateWizardIteratorWrapper.java:180)
   at org.openide.WizardDescriptor.callInstantiateOpen(WizardDescriptor.java:1626)
   at org.openide.WizardDescriptor.callInstantiate(WizardDescriptor.java:1570)
   at org.openide.WizardDescriptor.access$2300(WizardDescriptor.java:92)
   at org.openide.WizardDescriptor$Listener$2$1.run(WizardDescriptor.java:2257)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)