From aa31b724b97792b0bb5b2aea273059a53c4ee04f Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 19 Aug 2014 11:56:33 +0530
Subject: [PATCH] ...

---
 src/calibre/gui2/tweak_book/boss.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/calibre/gui2/tweak_book/boss.py b/src/calibre/gui2/tweak_book/boss.py
index 920d9c3376..5b14a0d691 100644
--- a/src/calibre/gui2/tweak_book/boss.py
+++ b/src/calibre/gui2/tweak_book/boss.py
@@ -1382,6 +1382,7 @@ class Boss(QObject):
             QApplication.instance().quit()
 
     def shutdown(self):
+        self.save_manager.check_for_completion.disconnect()
         self.gui.preview.stop_refresh_timer()
         self.gui.live_css.stop_update_timer()
         self.save_state()