Heroku ssh issues strike again

If anyone has a bulletproof solution to the error below, I would love the hear it! Many of the SO solutions aren't working for me. I have foo.pub key on local and heroku verified, I have the correct remote git repo and I have a config file with the correct pub key file and user info. Arghhh...

sudo git push heroku master Permission denied (publickey). fatal: The remote end hung up unexpectedly

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Answers

Starting with a new user with full permissions and reverting back to Django 1.4.x seems to have done the trick. The standard Heroku steps to manage keys works.