Python: IOError: [Errno 13] Permission denied RAdwords Error 400 (OAuth2Error)!!1

I'm trying to connect to adwords api, and my authentication is failing when attempting with both Python and R. For Python: if __name__ == '__main__': # Initialize client object. dfp_client = dfp.DfpClient.LoadFromStorage() main(dfp_client) Traceback (most recent call last): File

Developer Token - where do I get it

I have read all the documentation and I can't find my developer token. The MCC was set up a long time ago (before my time), and I can't find anywhere? -- -- =~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~ Also find us on our blog and Google+: https://googleadsdeveloper.blogspot.com/