@dhermes - Using gcloud 0.18.0 (previously 0.17.0), oauthclient 3.0.0 (previously 2.2.0), and grpcio 1.0.0rc1 (previously 0.15.0), I no longer seem to be able to reproduce this issue. I do still occasionally get auth errors, but I recover from them on subsequent attempts without needing to redeploy my app, which I can handle on my side. Thanks for your help and patience!
@dhermes - Using gcloud 0.18.0 (previously 0.17.0), oauthclient 3.0.0 (previously 2.2.0), and grpcio 1.0.0rc1 (previously 0.15.0), I no longer seem to be able to reproduce this issue. I do still occasionally get auth errors, but I recover from them on subsequent attempts without needing to redeploy my app, which I can handle on my side. Thanks for your help and patience!