From 8162aa04a45e9492761ded4540cb8ffcd72908f4 Mon Sep 17 00:00:00 2001
From: Charles Haley <cbhaley@i.wont.say.com>
Date: Tue, 4 Jul 2017 18:43:31 +0200
Subject: [PATCH] Ooops again: fix it right. Although I am no longer convinced
 that the qv plugin can be not installed/enabled.

---
 src/calibre/gui2/init.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/calibre/gui2/init.py b/src/calibre/gui2/init.py
index 44e8187388..3bd8e9c834 100644
--- a/src/calibre/gui2/init.py
+++ b/src/calibre/gui2/init.py
@@ -589,7 +589,9 @@ class LayoutMixin(object):  # {{{
             else:
                 if x == 'gv':
                     button = self.grid_view_button
-                elif x == 'qv' and self.qv:
+                elif x == 'qv':
+                    if self.qv is None:
+                        continue
                     button = self.qv.qv_button
                 else:
                     button = self.search_bar_button