Corretto baco nel caso di errori di connesione quando si recupera

diff --git a/DrPrintBackend.py b/DrPrintBackend.py
index b8127d8..679a082 100644
--- a/DrPrintBackend.py
+++ b/DrPrintBackend.py
@@ -1,6 +1,5 @@
 # -*- coding: utf-8 -*-
 ## Some useful function to help DrPrint to
-# -*- coding: utf-8 -*-

 import paramiko, gobject, select, time, re

diff --git a/DrPrintGui/Input.py b/DrPrintGui/Input.py
index 2ce8d6b..7064f55 100644
--- a/DrPrintGui/Input.py
+++ b/DrPrintGui/Input.py
@@ -1,6 +1,5 @@
 # -*- coding: utf-8 -*-
 ## This library provides User Input fields
-# -*- coding: utf-8 -*-

 import gtk, pygtk, gobject, os

diff --git a/DrPrintGui/MainWin.py b/DrPrintGui/MainWin.py
index 2c86991..15775e8 100644
--- a/DrPrintGui/MainWin.py
+++ b/DrPrintGui/MainWin.py
@@ -1,5 +1,5 @@
+# -*- coding: utf-8 -*-
 ## This library is part of DrPrintGui
-#  -*- coding: utf-8 -*-
 ## This file provide the MainWin object,
 ## that is the main window of the DrPrint
 ## application
@@ -163,10 +163,15 @@ class MainWin(gtk.Window):
                                  "Il seguente errore si è verificato durante il recupero della coda: %s" % e)
             resp = dialog.run()
             dialog.destroy()
+            jobs = None
+
+        # Se siamo riusciti a scucire qualche informazione la mostriamo,
+        # altrimenti no.
         self.queue_button.set_state("idle")
-        qd = QueueDialog(jobs, printer)
-        resp = qd.run()
-        qd.destroy()
+        if jobs:
+	  qd = QueueDialog(jobs, printer)
+	  resp = qd.run()
+	  qd.destroy()



diff --git a/drprint.desktop b/drprint.desktop
old mode 100644
new mode 100755
index ad4c7d6..f2ec01b
--- a/drprint.desktop
+++ b/drprint.desktop
@@ -1,3 +1,4 @@
+#!/usr/bin/env xdg-open
 [Desktop Entry]
 Encoding=UTF-8
 Name=DrPrint