AppConfigNotFoundError

[betelgeuse@localhost soc]$ thirdparty/google_appengine/dev_appserver.py rebuild
WARNING  2012-03-01 09:07:24,326 urlfetch_stub.py:111] No ssl package found. urlfetch will not be able to validate SSL certificates.
Traceback (most recent call last):
  File "thirdparty/google_appengine/dev_appserver.py", line 101, in <module>
    run_file(__file__, globals())
  File "thirdparty/google_appengine/dev_appserver.py", line 97, in run_file
    execfile(script_path, globals_)
  File "/home/betelgeuse/soc/thirdparty/google_appengine/google/appengine/tools/dev_appserver_main.py", line 692, in <module>
    sys.exit(main(sys.argv))
  File "/home/betelgeuse/soc/thirdparty/google_appengine/google/appengine/tools/dev_appserver_main.py", line 579, in main
    root_path, {}, default_partition=default_partition)
  File "/home/betelgeuse/soc/thirdparty/google_appengine/google/appengine/tools/dev_appserver.py", line 3122, in LoadAppConfig
    raise AppConfigNotFoundError
google.appengine.tools.dev_appserver.AppConfigNotFoundError