PROPERTY GET not defined for: <property name>

You tried to retrieve the value of a property for which you did not define a Property Get procedure. For example:

Dim myInt As Integer
Dim myOtherInt As Integer
Property Set MyProp As Integer
    myInt% = MyProp%
End Property
MyOtherInt% = MyProp% ' Illegal because there is no 
                      ' Property Get MyProp defined.

Define a Property Get procedure for the property whose value you want to retrieve.