Steps to reproduce:
1) Start an application using JDK 6 (e.g. SwingSet2)
2) Connect to that application
3) Go to MBeans tab
4) Select java.lang:type=Threading
5) Double-click on AllLockedMonitors or AllLockedSynchronizers attribute


Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
        at sun.tools.jconsole.inspector.XOpenTypeViewer$XCompositeData.load(XOpenTypeViewer.java:363)
        at sun.tools.jconsole.inspector.XOpenTypeViewer$XCompositeData.loadCompositeData(XOpenTypeViewer.java:402)
        at sun.tools.jconsole.inspector.XOpenTypeViewer$XCompositeData.<init>(XOpenTypeViewer.java:328)
        at sun.tools.jconsole.inspector.XOpenTypeViewer$XCompositeData.load(XOpenTypeViewer.java:364)
        at sun.tools.jconsole.inspector.XOpenTypeViewer$XCompositeData.loadCompositeData(XOpenTypeViewer.java:402)
        at sun.tools.jconsole.inspector.XOpenTypeViewer$XCompositeData.<init>(XOpenTypeViewer.java:328)
        at sun.tools.jconsole.inspector.XOpenTypeViewer$XTabularData.<init>(XOpenTypeViewer.java:252)
        at sun.tools.jconsole.inspector.XOpenTypeViewer.<init>(XOpenTypeViewer.java:544)
        at sun.tools.jconsole.inspector.XOpenTypeViewer.loadOpenType(XOpenTypeViewer.java:529)
        at sun.tools.jconsole.inspector.XDataViewer.createAttributeViewer(XDataViewer.java:117)
        at sun.tools.jconsole.inspector.XMBeanAttributes.updateZoomedCell(XMBeanAttributes.java:489)
        at sun.tools.jconsole.inspector.XMBeanAttributes$AttributesMouseListener.mousePressed(XMBeanAttributes.java:616)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:222)
        at java.awt.Component.processMouseEvent(Component.java:5952)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3282)
        at java.awt.Component.processEvent(Component.java:5720)
        at java.awt.Container.processEvent(Container.java:1960)
        at java.awt.Component.dispatchEventImpl(Component.java:4365)
        at java.awt.Container.dispatchEventImpl(Container.java:2018)
        at java.awt.Component.dispatchEvent(Component.java:4195)
        at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4222)
        at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3883)
        at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3816)
        at java.awt.Container.dispatchEventImpl(Container.java:2004)
        at java.awt.Window.dispatchEventImpl(Window.java:2300)
        at java.awt.Component.dispatchEvent(Component.java:4195)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        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)