I know this is a little late, but are you using the git-push-to-deploy feature on your app?
I've found that the "builtins" defined in app.yaml do not work after a push-to-deploy (they return 404s) but doing a normal appcfg update makes them work again. I experienced these 404 failures after push-deploys with both remote_api and deferred. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/google-appengine. For more options, visit https://groups.google.com/groups/opt_out.
