java.lang.NullPointerException: The lib parameter cannot be null
        at org.openide.util.Parameters.notNull(Parameters.java:86)
        at org.netbeans.spi.project.support.ant.ReferenceHelper.copyLibrary(ReferenceHelper.java:1497)
        at org.netbeans.modules.scala.project.J2SEProjectGenerator.copyRequiredLibraries(J2SEProjectGenerator.java:327)
        at org.netbeans.modules.scala.project.J2SEProjectGenerator.access$100(J2SEProjectGenerator.java:78)
        at org.netbeans.modules.scala.project.J2SEProjectGenerator$1$1.run(J2SEProjectGenerator.java:106)
        at org.netbeans.modules.scala.project.J2SEProjectGenerator$1$1.run(J2SEProjectGenerator.java:105)
        at org.openide.util.Mutex.writeAccess(Mutex.java:433)
        at org.openide.util.Mutex$1R.run(Mutex.java:1305)
        at org.netbeans.api.project.ProjectManager$2$1.run(ProjectManager.java:120)
        at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:120)
        at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:499)
        at org.openide.filesystems.FileUtil.runAtomicAction(FileUtil.java:161)
        at org.netbeans.api.project.ProjectManager$2.execute(ProjectManager.java:118)
        at org.openide.util.Mutex.doWrapperAccess(Mutex.java:1320)
        at org.openide.util.Mutex.writeAccess(Mutex.java:426)
        at org.netbeans.modules.scala.project.J2SEProjectGenerator$1.run(J2SEProjectGenerator.java:104)
        at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:120)
        at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:499)
        at org.netbeans.modules.scala.project.J2SEProjectGenerator.createProject(J2SEProjectGenerator.java:97)
        at org.netbeans.modules.scala.project.ui.wizards.NewJ2SEProjectWizardIterator.instantiate(NewJ2SEProjectWizardIterator.java:180)
        at org.openide.loaders.TemplateWizard$InstantiatingIteratorBridge.instantiate(TemplateWizard.java:1023)
        at org.openide.loaders.TemplateWizard.handleInstantiate(TemplateWizard.java:595)
        at org.openide.loaders.TemplateWizard.instantiateNewObjects(TemplateWizard.java:416)
        at org.openide.loaders.TemplateWizardIterImpl.instantiate(TemplateWizardIterImpl.java:253)
        at org.openide.loaders.TemplateWizardIteratorWrapper.instantiate(TemplateWizardIteratorWrapper.java:165)
        at org.openide.WizardDescriptor.callInstantiateOpen(WizardDescriptor.java:1384)
        at org.openide.WizardDescriptor.callInstantiate(WizardDescriptor.java:1341)
        at org.openide.WizardDescriptor.access$1600(WizardDescriptor.java:119)
        at org.openide.WizardDescriptor$Listener$2$1.run(WizardDescriptor.java:1908)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986)