java.lang.NullPointerException at javax.swing.ImageIcon.loadImage(ImageIcon.java:285) at javax.swing.ImageIcon.setImage(ImageIcon.java:344) at org.netbeans.modules.tasklist.usertasks.dependencies.DependencyPanel$UserTaskTreeCellRenderer.getTreeCellRendererComponent(DependencyPanel.java:85) at javax.swing.plaf.basic.BasicTreeUI$NodeDimensionsHandler.getNodeDimensions(BasicTreeUI.java:2712) at javax.swing.tree.AbstractLayoutCache.getNodeDimensions(AbstractLayoutCache.java:475) at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.updatePreferredSize(VariableHeightLayoutCache.java:1342) at javax.swing.tree.VariableHeightLayoutCache$TreeStateNode.getPreferredWidth(VariableHeightLayoutCache.java:1159) at javax.swing.tree.VariableHeightLayoutCache.getMaxNodeWidth(VariableHeightLayoutCache.java:990) at javax.swing.tree.VariableHeightLayoutCache.getPreferredWidth(VariableHeightLayoutCache.java:291) at javax.swing.plaf.basic.BasicTreeUI.updateCachedPreferredSize(BasicTreeUI.java:1823) at javax.swing.plaf.basic.BasicTreeUI.getPreferredSize(BasicTreeUI.java:1921) at javax.swing.plaf.basic.BasicTreeUI.getPreferredSize(BasicTreeUI.java:1909) at javax.swing.JComponent.getPreferredSize(JComponent.java:1634) at javax.swing.JTree.getPreferredScrollableViewportSize(JTree.java:3207) at javax.swing.ViewportLayout.preferredLayoutSize(ViewportLayout.java:75) at java.awt.Container.preferredSize(Container.java:1599) at java.awt.Container.getPreferredSize(Container.java:1584) at javax.swing.JComponent.getPreferredSize(JComponent.java:1636) at javax.swing.ScrollPaneLayout.preferredLayoutSize(ScrollPaneLayout.java:475) at java.awt.Container.preferredSize(Container.java:1599) at java.awt.Container.getPreferredSize(Container.java:1584) at javax.swing.JComponent.getPreferredSize(JComponent.java:1636) at java.awt.GridBagLayout.GetLayoutInfo(GridBagLayout.java:1092) at java.awt.GridBagLayout.GetLayoutInfo(GridBagLayout.java:893) at java.awt.GridBagLayout.preferredLayoutSize(GridBagLayout.java:713) at java.awt.Container.preferredSize(Container.java:1599) at java.awt.Container.getPreferredSize(Container.java:1584) at javax.swing.JComponent.getPreferredSize(JComponent.java:1636) at org.netbeans.core.windows.services.NbPresenter.initializeMessage(NbPresenter.java:309) at org.netbeans.core.windows.services.NbPresenter.initializePresenter(NbPresenter.java:434) at org.netbeans.core.windows.services.NbPresenter.initialize(NbPresenter.java:267) at org.netbeans.core.windows.services.NbPresenter.(NbPresenter.java:208) at org.netbeans.core.windows.services.NbDialog.(NbDialog.java:75) at org.netbeans.core.windows.services.DialogDisplayerImpl$1.run(DialogDisplayerImpl.java:118) at org.netbeans.core.windows.services.DialogDisplayerImpl$1.run(DialogDisplayerImpl.java:110) at org.openide.util.Mutex.doEventAccess(Mutex.java:1361) at org.openide.util.Mutex.readAccess(Mutex.java:271) at org.netbeans.core.windows.services.DialogDisplayerImpl.createDialog(DialogDisplayerImpl.java:110) at org.netbeans.modules.tasklist.usertasks.dependencies.DependenciesPanel.jButtonAddActionPerformed(DependenciesPanel.java:180) at org.netbeans.modules.tasklist.usertasks.dependencies.DependenciesPanel.access$300(DependenciesPanel.java:24) at org.netbeans.modules.tasklist.usertasks.dependencies.DependenciesPanel$3.actionPerformed(DependenciesPanel.java:142) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:236) at java.awt.Component.processMouseEvent(Component.java:6373) at javax.swing.JComponent.processMouseEvent(JComponent.java:3267) at java.awt.Component.processEvent(Component.java:6138) at java.awt.Container.processEvent(Container.java:2085) at java.awt.Component.dispatchEventImpl(Component.java:4735) at java.awt.Container.dispatchEventImpl(Container.java:2143) at java.awt.Component.dispatchEvent(Component.java:4565) at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4621) at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4282) at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4212) at java.awt.Container.dispatchEventImpl(Container.java:2129) at java.awt.Window.dispatchEventImpl(Window.java:2478) at java.awt.Component.dispatchEvent(Component.java:4565) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:679) at java.awt.EventQueue.access$000(EventQueue.java:85) at java.awt.EventQueue$1.run(EventQueue.java:638) at java.awt.EventQueue$1.run(EventQueue.java:636) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98) at java.awt.EventQueue$2.run(EventQueue.java:652) at java.awt.EventQueue$2.run(EventQueue.java:650) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.awt.EventQueue.dispatchEvent(EventQueue.java:649) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:162) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:205) at java.awt.Dialog$1.run(Dialog.java:1046) at java.awt.Dialog$3.run(Dialog.java:1098) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.awt.Dialog.show(Dialog.java:1096) at org.netbeans.core.windows.services.NbPresenter.superShow(NbPresenter.java:1051) at org.netbeans.core.windows.services.NbPresenter.doShow(NbPresenter.java:1085) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:1073) at org.netbeans.core.windows.services.NbPresenter.run(NbPresenter.java:125) at org.openide.util.Mutex.doEventAccess(Mutex.java:1361) at org.openide.util.Mutex.readAccess(Mutex.java:271) at org.netbeans.core.windows.services.NbPresenter.show(NbPresenter.java:1058) at java.awt.Component.show(Component.java:1584) at java.awt.Component.setVisible(Component.java:1536) at java.awt.Window.setVisible(Window.java:842) at java.awt.Dialog.setVisible(Dialog.java:986) at org.netbeans.modules.tasklist.usertasks.actions.ShowTaskAction.actionPerformed(ShowTaskAction.java:96) at org.netbeans.modules.tasklist.usertasks.UserTasksTreeTable$2.mouseClicked(UserTasksTreeTable.java:228) at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:253) at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:252) at java.awt.Component.processMouseEvent(Component.java:6376) at javax.swing.JComponent.processMouseEvent(JComponent.java:3267) at java.awt.Component.processEvent(Component.java:6138) at java.awt.Container.processEvent(Container.java:2085) at java.awt.Component.dispatchEventImpl(Component.java:4735) at java.awt.Container.dispatchEventImpl(Container.java:2143) at java.awt.Component.dispatchEvent(Component.java:4565) at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4621) at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:4291) at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:4212) at java.awt.Container.dispatchEventImpl(Container.java:2129) at java.awt.Window.dispatchEventImpl(Window.java:2478) at java.awt.Component.dispatchEvent(Component.java:4565) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:679) at java.awt.EventQueue.access$000(EventQueue.java:85) at java.awt.EventQueue$1.run(EventQueue.java:638) at java.awt.EventQueue$1.run(EventQueue.java:636) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98) at java.awt.EventQueue$2.run(EventQueue.java:652) at java.awt.EventQueue$2.run(EventQueue.java:650) at java.security.AccessController.doPrivileged(AccessController.java:0) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.awt.EventQueue.dispatchEvent(EventQueue.java:649) at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:162) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)