java.lang.NullPointerException
   at org.uml.visual.widgets.anchors.ParallelNodeAnchor.recalculate(ParallelNodeAnchor.java:194)
   at org.uml.visual.widgets.anchors.ParallelNodeAnchor.compute(ParallelNodeAnchor.java:380)
   at org.netbeans.modules.visual.router.FreeRouter.routeConnection(FreeRouter.java:72)
   at org.netbeans.api.visual.widget.ConnectionWidget.calculateRouting(ConnectionWidget.java:530)
   at org.netbeans.modules.visual.layout.ConnectionWidgetLayout.layout(ConnectionWidgetLayout.java:112)
   at org.netbeans.api.visual.widget.Widget.layout(Widget.java:1357)
   at org.netbeans.api.visual.widget.Widget.layout(Widget.java:1349)
   at org.netbeans.api.visual.widget.LayerWidget.layout(LayerWidget.java:89)
   at org.netbeans.api.visual.widget.Widget.layout(Widget.java:1349)
   at org.netbeans.api.visual.widget.Scene.layoutScene(Scene.java:318)
   at org.netbeans.api.visual.widget.Scene.validate(Scene.java:399)
   at org.netbeans.api.visual.widget.SceneComponent.processLocationOperator(SceneComponent.java:296)
   at org.netbeans.api.visual.widget.SceneComponent.mouseEntered(SceneComponent.java:171)
   at java.awt.AWTEventMulticaster.mouseEntered(AWTEventMulticaster.java:299)
   at java.awt.Component.processMouseEvent(Component.java:6544)
   at javax.swing.JComponent.processMouseEvent(JComponent.java:3324)
   at java.awt.Component.processEvent(Component.java:6300)
   at java.awt.Container.processEvent(Container.java:2236)
   at java.awt.Component.dispatchEventImpl(Component.java:4891)
   at java.awt.Container.dispatchEventImpl(Container.java:2294)
   at java.awt.Component.dispatchEvent(Component.java:4713)
   at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4888)
   at java.awt.LightweightDispatcher.retargetMouseEnterExit(LightweightDispatcher.java:4676)
   at java.awt.LightweightDispatcher.trackMouseEnterExit(LightweightDispatcher.java:4654)
   at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4505)
   at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4466)
   at java.awt.Container.dispatchEventImpl(Container.java:2280)
   at java.awt.Window.dispatchEventImpl(Window.java:2750)
   at java.awt.Component.dispatchEvent(Component.java:4713)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
   at java.awt.EventQueue.access$500(EventQueue.java:97)
   at java.awt.EventQueue$3.run(EventQueue.java:709)
   at java.awt.EventQueue$3.run(EventQueue.java:703)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
   at java.awt.EventQueue$4.run(EventQueue.java:731)
   at java.awt.EventQueue$4.run(EventQueue.java:729)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
   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)