When does Names.RefersToRange Property Fail?

Greetings,

I have created a dynamic name range called "Test" that refers to

=OFFSET(Test!$G$1,1,0,COUNTA(Test!$G:$G)-1,1)

I refer to this range in my code using the syntax

Names("Test").RefersToRange

This works fine except when "Test" does not refer to a range, ie all cells are blank. I would like to know if there is anything else that will cause the "RefersToRange" property to fail. If not, then I plan to use this code when an error occurs

If Err.Number <> 0 Then
   MsgBox "The list contains no data"
   Exit Sub

Thanks a lot
Asha

N.B. Due to the monsoons, the internet connection is unstable so may not be able to respond promptly to any follow up questions.