Crystal reports-Datasource = xml file - logon error

[JanStry]

using CR 9.1 bundled with vb.net 2003.
Created a report using a xml file as the datasource and calling the report via code in vb.

Dim ds As DataSet
        ds = New DataSet
        Dim crReportDocument As New Labels
 
        ds.ReadXml(Application.StartupPath & "\Labels.xml")
 
        crReportDocument.Database.Tables.Item("Label1").SetDataSource(ds)
 
        CReportViewer.ReportSource = crReportDocument
        crReportDocument.Refresh()

The report works fine on my development pc but installing it onto a client pc then as soon i call the report as above, CR viewer would present the user with a form that requests database logon information to the above table.(Label1 which resides in the xml file).

Any Suggestions of the cause/fix?
Thanks