From 725e1b9a88468d4efefc8e7f96c5ad4f44446c11 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 1 Jul 2014 10:22:32 +0530
Subject: [PATCH] ...

---
 src/calibre/utils/ipc/launch.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/calibre/utils/ipc/launch.py b/src/calibre/utils/ipc/launch.py
index d21f0ec8f6..08bd592735 100644
--- a/src/calibre/utils/ipc/launch.py
+++ b/src/calibre/utils/ipc/launch.py
@@ -20,7 +20,7 @@ if iswindows:
     except:
         raise RuntimeError('NUL file missing in windows. This indicates a'
                 ' corrupted windows. You should contact Microsoft'
-                ' for assistance.')
+                ' for assistance and/or follow the steps described here: http://bytes.com/topic/net/answers/264804-compile-error-null-device-missing')
 
 def renice(niceness):
     try: