java.lang.IllegalArgumentException: Not a DataFolder: MultiFileObject@c60ee2[Templates/Project/Samples/AnagramProject.zip] (was a org.netbeans.modules.java.jarloader.JarDataObject) (file is folder? false)
        at org.openide.loaders.DataFolder.findFolder(DataFolder.java:520)
        at org.netbeans.modules.welcome.ui.Samples.createLinkForCategory(Samples.java:109)
        at org.netbeans.modules.welcome.ui.Samples.createLinks(Samples.java:86)
        at org.netbeans.modules.welcome.ui.Samples.<init>(Samples.java:70)
        at org.netbeans.modules.welcome.ui.WelcomeTab.buildContent(WelcomeTab.java:86)
        at org.netbeans.modules.welcome.ui.AbstractTab.addNotify(AbstractTab.java:94)
        at java.awt.Container.addNotify(Container.java:2592)
        at javax.swing.JComponent.addNotify(JComponent.java:4683)
        at java.awt.Container.addNotify(Container.java:2592)
        at javax.swing.JComponent.addNotify(JComponent.java:4683)
        at java.awt.Container.addNotify(Container.java:2592)
        at javax.swing.JComponent.addNotify(JComponent.java:4683)
        at java.awt.Container.addNotify(Container.java:2592)
        at javax.swing.JComponent.addNotify(JComponent.java:4683)
        at java.awt.Container.addNotify(Container.java:2592)
        at javax.swing.JComponent.addNotify(JComponent.java:4683)
        at java.awt.Container.addNotify(Container.java:2592)
        at javax.swing.JComponent.addNotify(JComponent.java:4683)
        at java.awt.Container.addNotify(Container.java:2592)
        at javax.swing.JComponent.addNotify(JComponent.java:4683)
        at java.awt.Container.addNotify(Container.java:2592)
        at javax.swing.JComponent.addNotify(JComponent.java:4683)
        at java.awt.Container.addNotify(Container.java:2592)
        at javax.swing.JComponent.addNotify(JComponent.java:4683)
        at java.awt.Container.addNotify(Container.java:2592)
        at javax.swing.JComponent.addNotify(JComponent.java:4683)
        at java.awt.Container.addNotify(Container.java:2592)
        at javax.swing.JComponent.addNotify(JComponent.java:4683)
        at java.awt.Container.addNotify(Container.java:2592)
        at javax.swing.JComponent.addNotify(JComponent.java:4683)
        at java.awt.Container.addNotify(Container.java:2592)
        at javax.swing.JComponent.addNotify(JComponent.java:4683)
        at java.awt.Container.addImpl(Container.java:1062)
        at java.awt.Container.add(Container.java:903)
        at org.netbeans.core.windows.view.ui.MainWindow.setDesktop(MainWindow.java:500)
        at org.netbeans.core.windows.view.ViewHierarchy.setDesktop(ViewHierarchy.java:785)
        at org.netbeans.core.windows.view.ViewHierarchy.setMainWindowDesktop(ViewHierarchy.java:775)
        at org.netbeans.core.windows.view.ViewHierarchy.updateDesktop(ViewHierarchy.java:668)
        at org.netbeans.core.windows.view.DefaultView.showWindowSystem(DefaultView.java:556)
        at org.netbeans.core.windows.view.DefaultView.windowSystemVisibilityChanged(DefaultView.java:498)
        at org.netbeans.core.windows.view.DefaultView.changeGUI(DefaultView.java:180)
        at org.netbeans.core.windows.ViewRequestor.dispatchRequest(ViewRequestor.java:269)
        at org.netbeans.core.windows.ViewRequestor.processVisibilityRequest(ViewRequestor.java:258)
        at org.netbeans.core.windows.ViewRequestor.postVisibilityRequest(ViewRequestor.java:195)
        at org.netbeans.core.windows.ViewRequestor.scheduleRequest(ViewRequestor.java:117)
        at org.netbeans.core.windows.Central.setVisible(Central.java:118)
        at org.netbeans.core.windows.WindowManagerImpl.setVisible(WindowManagerImpl.java:758)
        at org.netbeans.core.windows.WindowSystemImpl.show(WindowSystemImpl.java:87)
        at org.netbeans.core.NonGui$3.run(NonGui.java:210)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)