--- dff/ui/gui/mainwindow.py.orig	2013-02-28 18:40:39.000000000 +0800
+++ dff/ui/gui/mainwindow.py	2017-01-15 11:25:57.786002942 +0800
@@ -45,7 +45,11 @@
 from dff.ui.gui.dialog.dialog import Dialog
 from dff.ui.gui.resources.ui_mainwindow import Ui_MainWindow
 
-from dff.ui.gui.widget.help import Help
+HELP = True
+try:
+    from dff.ui.gui.widget.help import Help
+except ImportError:
+    HELP = False
 
 class MainWindow(QMainWindow, Ui_MainWindow):
     def __init__(self,  app, debug = False):
@@ -96,8 +100,9 @@
         self.connect(self.actionShell, SIGNAL("triggered()"), self.shellActions.create)
         self.connect(self.actionPython_interpreter, SIGNAL("triggered()"), self.interpreterActions.create)        ## About menu
  
+        if HELP:
+            self.connect(self.actionHelp, SIGNAL("triggered()"), self.addHelpWidget)
 
-        self.connect(self.actionHelp, SIGNAL("triggered()"), self.addHelpWidget)
         self.connect(self.actionAbout, SIGNAL("triggered()"), self.dialog.about)       
 
     def initToolbarList(self):
@@ -309,7 +314,8 @@
             self.actionShell.setEnabled(True)
             self.actionPython_interpreter.setEnabled(True)
             self.actionIdeOpen.setEnabled(True)
-            self.actionHelp.setEnabled(True)
+            if HELP:
+                self.actionHelp.setEnabled(True)
 
     def fullscreenMode(self):
         if self.isFullScreen():