From b95d0a537d3c7bfc095244a6acef79bb74555daf Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Wed, 8 Nov 2017 07:23:43 +0530
Subject: [PATCH] Fix transient error during startup when using subtititle
 templates in the cover browser

---
 src/calibre/gui2/cover_flow.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/calibre/gui2/cover_flow.py b/src/calibre/gui2/cover_flow.py
index 1ada278cbe..fa632d97ff 100644
--- a/src/calibre/gui2/cover_flow.py
+++ b/src/calibre/gui2/cover_flow.py
@@ -133,6 +133,8 @@ if pictureflow is not None:
         def subtitle(self, index):
             try:
                 db = self.model.db.new_api
+                if not self.template_inited:
+                    self.init_template(db)
                 field = db.pref('cover_browser_subtitle_field', 'rating')
                 if field and field != 'none':
                     book_id = self.model.id(index)