java.lang.IllegalStateException
        at org.netbeans.modules.db.metadata.model.api.MetadataModel.runReadAction(MetadataModel.java:87)
        at org.netbeans.modules.db.explorer.node.IndexNode.getTableName(IndexNode.java:207)
        at org.netbeans.modules.db.explorer.node.IndexNode.getTableName(IndexNode.java:132)
        at org.netbeans.modules.db.explorer.node.IndexNode.destroy(IndexNode.java:149)
        at org.openide.nodes.FilterNode.destroy(FilterNode.java:604)
        at org.openide.explorer.ExplorerActionsImpl$DeleteActionPerformer.doDestroy(ExplorerActionsImpl.java:658)
        at org.openide.explorer.ExplorerActionsImpl$DeleteActionPerformer.actionPerformed(ExplorerActionsImpl.java:608)
        at org.openide.awt.GeneralAction$DelegateAction.actionPerformed(GeneralAction.java:213)
        at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1882)
        at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2202)
        at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
        at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
        at javax.swing.AbstractButton.doClick(AbstractButton.java:334)
        at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1051)
        at apple.laf.CUIAquaMenuItem.doClick(CUIAquaMenuItem.java:119)
        at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1092)
        at java.awt.Component.processMouseEvent(Component.java:5602)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3135)
        at java.awt.Component.processEvent(Component.java:5367)
        at java.awt.Container.processEvent(Container.java:2010)
        at java.awt.Component.dispatchEventImpl(Component.java:4068)
        at java.awt.Container.dispatchEventImpl(Container.java:2068)
        at java.awt.Component.dispatchEvent(Component.java:3903)
        at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4256)
        at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:3936)
        at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:3866)
        at java.awt.Container.dispatchEventImpl(Container.java:2054)
        at java.awt.Window.dispatchEventImpl(Window.java:1801)
        at java.awt.Component.dispatchEvent(Component.java:3903)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:117)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:269)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:184)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:176)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)