[flexcoders] FocusManager throws an error once in a while - defaultButton null

[djhatrick]

TypeError: Error #1009: Cannot access a property or method of a null object 
reference.
        at 
mx.managers::FocusManager/focusInHandler()[C:\autobuild\3.4.0\frameworks\projects\framework\src\mx\managers\FocusManager.as:601]



There's nothing in the debugger but this error, happens a lot,


        // restore the default button to be the original one
                                if (defButton && defButton != _defaultButton)
                                {
                                        defButton.emphasized = false;
                                        defButton = _defaultButton;
                                        _defaultButton.emphasized = true;
                                }