commit e19463a8781fa5de74e62a09684259309b2f89cf
Author: Valentina Mukhamedzhanova <vmukhame@redhat.com>
Date:   Mon Sep 22 14:45:10 2014 +0200

    Add a comprehensive error message to pycurl error 77. BZ 1082648

diff --git a/urlgrabber/grabber.py b/urlgrabber/grabber.py
index fd31123..961d18a 100644
--- a/urlgrabber/grabber.py
+++ b/urlgrabber/grabber.py
@@ -1576,6 +1576,7 @@ class PyCurlFileObject(object):
                              67 : _("Authentication failure"),
                              70 : _("Out of disk space on server"),
                              73 : _("Remove file exists"),
+                             77 : _("Problem with the SSL CA cert (path? access rights?)"),
                               }
                 errstr = str(e.args[1]) or pyerr2str.get(errcode, '<Unknown>')
                 if code and not 200 <= code <= 299: