From dfcadabf14d54fd5e6c4ae9f16626e6680dc2852 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Fri, 17 Aug 2012 21:17:15 +0530
Subject: [PATCH] Handle the catalog thumbnail cache becoming larger than 2GB

---
 src/calibre/library/catalogs/epub_mobi_builder.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/calibre/library/catalogs/epub_mobi_builder.py b/src/calibre/library/catalogs/epub_mobi_builder.py
index 6c87ff994f..a8cee7e1c9 100644
--- a/src/calibre/library/catalogs/epub_mobi_builder.py
+++ b/src/calibre/library/catalogs/epub_mobi_builder.py
@@ -3879,7 +3879,7 @@ Author '{0}':
 
         def open_archive(mode='r'):
             try:
-                return ZipFile(self.__archive_path, mode=mode)
+                return ZipFile(self.__archive_path, mode=mode, allowZip64=True)
             except:
                 # Happens on windows if the file is opened by another
                 # process