Errh: 4602: Dom Parser Operation Failed

...
exporter.Process
...

Sub Initialize
Dim session As NotesSession
Dim db As NotesDatabase
Dim inputStream As NotesStream, outputStream As NotesStream
Dim docNode As NotesDOMDocumentNode

Dim outputFile As String
outputFile = "c:\dxl\Karts50_dom.xml"

On Error Goto errh

Set session = New NotesSession
Set db = session.CurrentDatabase

Set outputStream =session.CreateStream
outputStream.Open (outputFile)
outputStream.Truncate

Dim nc As NotesNoteCollection
Set nc = db.CreateNoteCollection(False)
nc.SelectDocuments=True
Call nc.BuildCollection

Dim exporter As NotesDXLExporter
Set exporter = session.CreateDXLExporter(nc)
exporter.OutputDOCTYPE = False

Set domParser=session.CreateDOMParser(exporter, outputStream)
domParser.AddXMLDeclNode = True
exporter.Process

Set docNode = domParser.Document

Call walkTree(docNode)

results:
Call outputStream.Close
Exit Sub
errh:
outputStream.WriteText ("errh: "+Cstr(Err)+": "+Error+LF)
Resume results
End Sub