VB6 and XML namespace declarations

[gezzer]

I have a VB6 function which loads and examines XML. The XML contains a collection of sets of data about 'Orders'. The function loads this, breaks it down into individual orders and then sends each one to a Message Queue.

e.g.


Dim xmlDocOrders As MSXML2.DOMDocument40
Dim xmlNdlOrders As MSXML2.IXMLDOMNodeList
Dim xmlNodOrder As MSXML2.IXMLDOMNode

' Some code...

Set xmlDocOrders = New MSXML2.DOMDocument40
xmlDocOrders.Load "File Path"
Set xmlNdlOrders = xmlDocOrders.selectNodes("/ROOT/Order")
For Each xmlNodOrder In xmlNdlOrders
' Iterate through the orders, sending each one to the message queue...
Next


This has worked fine, until recently when I have been asked to add a new namespace declarations to my XML.
The XML now looks a little like this: (but with some info)


<ROOT>
<ns0:Order xmlns:sn0="

http://...">

' Some more nodes (but no other attempted namespace declarations.)
</ns0:Order>
</ROOT>


The XML appears to be fine, as it loads into IE with no parser errors.
When I run the function, it loads the XML document okay, but then I get an error when it tries to populate the node list.
I have altered the line to read:

Set xmlNdlOrders = xmlDocOrders.selectNodes ("/ROOT/ns0:Order")


The error I get is:
"Reference to undeclared namespace prefix: 'ns0'."

It makes no sense to me, as I think I have declared it perfectly well. Has anybody else experienced this sort of behaviour? Can anybody explain why I am getting this error? Thanks, gezzer