XPathNodeIterat or problem with rss/xml feed

[dave]

I am using the following code to return all items for most rss feeds. This
works fine for most however today i came across the following feed where itr
(see below) returns nothing.
(http://my.abcnews.go.com/rsspublic/world_rss093.xml)

When compared this bad feed with others they appear to have the same
structure rss/channel/item

Why is itr below returning nothing??? please help

Dim doc As New XPathDocument(R ssUrl)
Dim nav As XPathNavigator = doc.CreateNavig ator
Dim iter As XPathNodeIterat or = nav.Select("/rss/channel/item")
'("/rss/channel/item")

While iter.MoveNext
ProcessNode(ite r.Current, RssID, dteNow)
End While
Next