diff --git a/openlp/core/ui/slidecontroller.py b/openlp/core/ui/slidecontroller.py
index ca4d34826..f4f355483 100644
--- a/openlp/core/ui/slidecontroller.py
+++ b/openlp/core/ui/slidecontroller.py
@@ -591,8 +591,10 @@ class SlideController(QtGui.QWidget):
             QtCore.QVariant(checked))
         if checked:
             Receiver.send_message(u'maindisplay_hide', HideMode.Blank)
+            Receiver.send_message(u'presentation_blank')
         else:
             Receiver.send_message(u'maindisplay_show')
+            Receiver.send_message(u'presentation_unblank')
 
     def onThemeDisplay(self, checked):
         """
diff --git a/openlp/plugins/presentations/lib/messagelistener.py b/openlp/plugins/presentations/lib/messagelistener.py
index eb31660f0..8bfd53bb7 100644
--- a/openlp/plugins/presentations/lib/messagelistener.py
+++ b/openlp/plugins/presentations/lib/messagelistener.py
@@ -215,7 +215,7 @@ class MessageListener(object):
         Save the handler as any new presentations start here
         """
         isLive, item = self.decode_message(message)
-        log.debug(u'Startup called with message %s' % message)
+        log.debug(u'Startup called with message ' % message)
         isBlank = message[2]
         file = os.path.join(item.get_frame_path(),
             item.get_frame_title())