connect to aws using boto - credentials error

Im trying to connect to aws using boto but Im having an error.

First, I created an aws account and then in managment console I clicked in IAM and I created a new user.

This user have associated a AWS_ACESS_KEY_ID and a AWS_SECRET_ACESS_KEY.

And then I stored this user credentials in /etc/boto.cfg and in ~/.boto, like this:

[Credentias]
aws_acess_key_id = ...
aws_secret_acess_key = ...

Now Im trying to connect to boto but Im having this error:

Traceback (most recent call last):
  File "send.py", line 12, in <module>
    s3 = boto.connect_s3()
  File "/usr/local/lib/python2.7/dist-packages/http://ift.tt/1G7lbon", line 141, in connect_s3
    return S3Connection(aws_access_key_id, aws_secret_access_key, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/http://ift.tt/1H2pUKR", line 190, in __init__
    validate_certs=validate_certs, profile_name=profile_name)
  File "/usr/local/lib/python2.7/dist-packages/http://ift.tt/1G7lbEI", line 569, in __init__
    host, config, self.provider, self._required_auth_capability())
  File "/usr/local/lib/python2.7/dist-packages/http://ift.tt/1H2pUKT", line 985, in get_auth_handler
    'Check your credentials' % (len(names), str(names)))
boto.exception.NoAuthHandlerFound: No handler was ready to authenticate. 1 handlers were checked. ['HmacAuthV1Handler'] Check your credentials

Do you see what can be wrong here?