diff -rupN google_appengine_broke/google/appengine/tools/devappserver2/admin/cron_handler.py google_appengine/google/appengine/tools/devappserver2/admin/cron_handler.py
--- google_appengine.1/google/appengine/tools/devappserver2/admin/cron_handler.py	2013-07-11 17:23:56.000000000 -0700
+++ google_appengine/google/appengine/tools/devappserver2/admin/cron_handler.py	2013-07-25 15:21:27.000000000 -0700
@@ -75,7 +75,7 @@ class CronHandler(admin_request_handler.
     """
     for cron_yaml in ('cron.yaml', 'cron.yml'):
       try:
-        with open(os.path.join(self.configuration.servers[0].application_root,
+        with open(os.path.join(self.configuration.modules[0].application_root,
                                cron_yaml)) as f:
           cron_info = croninfo.LoadSingleCron(f)
           return cron_info