not add printers to the server

Aug 19 at 2:58 PM
I can not add printers to the server gives me the following error
System.ExecutionEngineException en mscorlib.dll

Dim server As New PrintServer(ServerName)
    '\\ List all the printers present on the server...
    For Each pi As PrinterInformation In server.Printers
        Me.CheckedListBox_Printers.Items.Add(pi, True)
    Next