>>Public Property Let ParentObject(ByRef loValue As Object)
>>>Set loParentObject = loValue
>>>PropertyChanged "ParentObject"
>>>End Property
>>>
>Private Sub UserControl_WriteProperties(PropBag As PropertyBag)
>'PropBag.WriteProperty "ParentObject", ParentObject
>
>Private Sub UserControl_ReadProperties(PropBag As PropertyBag)
>'ParentObject = PropBag.ReadProperty("ParentObject")

What is the value of ParentObject? I think the property bag can only contain numbers and strings. I'm not sure if it can contain an object reference or something like that.