I dont know where is the problem...

How can i fix this error "Illegal characters in path." ?

The code i use is...

Code:
        Dim reader As New StreamReader(My.Settings.masuratori_preluare_date)

        Do While reader.Peek <> -1

            Dim fileName As String

            fileName = IO.Path.GetFileNameWithoutExtension(reader.ReadLine)

            Me.ListBox1.Items.Add(fileName)

        Loop

        reader.Close()