java.lang.NullPointerException
        at org.netbeans.modules.form.CodeCustomEditor.<init>(CodeCustomEditor.java:117)
        at org.netbeans.modules.form.RADConnectionPropertyEditor.getCustomEditor(RADConnectionPropertyEditor.java:165)
        at org.netbeans.modules.form.FormCustomEditor.<init>(FormCustomEditor.java:176)
        at org.netbeans.modules.form.FormPropertyEditor.getCustomEditor(FormPropertyEditor.java:307)
        at org.openide.explorer.propertysheet.PropertyDialogManager.<init>(PropertyDialogManager.java:126)
        at org.openide.explorer.propertysheet.CustomEditorAction.actionPerformed(CustomEditorAction.java:217)
        at org.openide.explorer.propertysheet.SheetTable.editCellAt(SheetTable.java:986)
        at javax.swing.plaf.basic.BasicTableUI$Handler.adjustSelection(BasicTableUI.java:1084)
        at javax.swing.plaf.basic.BasicTableUI$Handler.mousePressed(BasicTableUI.java:1014)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:263)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:262)
        at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:262)
        at java.awt.Component.processMouseEvent(Component.java:6035)
        at javax.swing.JComponent.processMouseEvent(JComponent.java:3265)
        at org.openide.explorer.propertysheet.SheetTable.processMouseEvent(SheetTable.java:719)
        at java.awt.Component.processEvent(Component.java:5803)
        at java.awt.Container.processEvent(Container.java:2058)
        at java.awt.Component.dispatchEventImpl(Component.java:4410)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        at java.awt.LightweightDispatcher.retargetMouseEvent(LightweightDispatcher.java:4322)
        at java.awt.LightweightDispatcher.processMouseEvent(LightweightDispatcher.java:3983)
        at java.awt.LightweightDispatcher.dispatchEvent(LightweightDispatcher.java:3916)
        at java.awt.Container.dispatchEventImpl(Container.java:2102)
        at java.awt.Window.dispatchEventImpl(Window.java:2429)
        at java.awt.Component.dispatchEvent(Component.java:4240)
        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)