java.lang.NoClassDefFoundError: Could not initialize class java.awt.dnd.DragSource at org.openide.explorer.view.ExplorerDragSupport.getDefaultGestureRecognizer(ExplorerDragSupport.java:241) at org.openide.explorer.view.ExplorerDragSupport.activate(ExplorerDragSupport.java:217) at org.openide.explorer.view.TreeView.setDragSource(TreeView.java:504) at org.netbeans.modules.project.ui.ProjectTab.(ProjectTab.java:202) at org.netbeans.modules.project.ui.ProjectTab.(ProjectTab.java:182) at org.netbeans.modules.project.ui.ProjectTab.getDefault(ProjectTab.java:332) at org.netbeans.modules.project.ui.ProjectTab.findDefault(ProjectTab.java:318) at org.netbeans.modules.project.ui.ProjectUtilities$2.run(ProjectUtilities.java:244) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:744) at java.awt.EventQueue.access$400(EventQueue.java:97) at java.awt.EventQueue$3.run(EventQueue.java:697) at java.awt.EventQueue$3.run(EventQueue.java:691) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75) at java.awt.EventQueue.dispatchEvent(EventQueue.java:714) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)