java.lang.ClassCastException: sun.awt.image.ToolkitImage cannot be cast to javax.swing.Icon
   at javax.swing.AbstractButton.setIconFromAction(AbstractButton.java:1279)
   at javax.swing.AbstractButton.configurePropertiesFromAction(AbstractButton.java:1165)
   at javax.swing.AbstractButton.setAction(AbstractButton.java:1109)
   at javax.swing.JToolBar.add(JToolBar.java:517)
   at org.netbeans.modules.maven.grammar.EffectivePomMD$EffPOMView.getToolbarRepresentation(EffectivePomMD.java:227)
   at org.netbeans.core.multiview.MultiViewPeer.showCurrentElement(MultiViewPeer.java:514)
   at org.netbeans.core.multiview.MultiViewPeer.showCurrentElement(MultiViewPeer.java:462)
   at org.netbeans.core.multiview.MultiViewPeer$SelectionListener.selectionChanged(MultiViewPeer.java:929)
   at org.netbeans.core.multiview.MultiViewModel.fireSelectionChanged(MultiViewModel.java:259)
   at org.netbeans.core.multiview.MultiViewModel.setActiveDescription(MultiViewModel.java:120)
   at org.netbeans.core.multiview.MultiViewModel$BtnGroup.setSelected(MultiViewModel.java:322)
   at javax.swing.JToggleButton$ToggleButtonModel.setSelected(JToggleButton.java:254)
   at javax.swing.ButtonGroup.setSelected(ButtonGroup.java:165)
   at org.netbeans.core.multiview.MultiViewModel$BtnGroup.setSelected(MultiViewModel.java:318)
   at org.netbeans.core.multiview.TabsComponent$ButtonMouseListener.mousePressed(TabsComponent.java:907)
   at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:280)
   at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:279)
   at java.awt.Component.processMouseEvent(Component.java:6532)
   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.processMouseEvent(LightweightDispatcher.java:4522)
   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)