Index 0 is not non-negative and below total rows count.

I'm running this code:

        Dim dvTest As DataView

        Dim cnn As SqlConnection = Utilities.GetMyConnectionString
        Dim cmd As New SqlCommand("mystoredprocedure", cnn)
        Dim dSet As New DataSet

        cmd.CommandType = CommandType.StoredProcedure
        cmd.CommandTimeout = 2000

        Dim da As New SqlDataAdapter(cmd)

        Try
            da.Fill(dSet, "Accounts")
            dvTest = dSet.Tables("Accounts").DefaultView
            'Filter by one ID
            dvTest.RowFilter = String.Format("ID='{0}'", (Utilities.PadRight(Me.ID, 15)))

            sb.Append(dvTest.Item(0).Item(2).ToString) 'build into string
            sb.ToString

        Catch ex As Exception
            Throw
        End Try

But I get the error:

Index 0 is not non-negative and below total rows count.

What is strange is that it is that the stored procedure is returning more than 1 record in the dataview, but somewhere it's dieing out.... any ideas?

Chris