environment.yaml Parsing Picky About Spacing

It seems the yaml parsing is very picky on the spacing. I had 3 spaces in front of "aws", and only 2 spaces in front of "canonistack." Once I added a space to canonistack it worked.

$ juju bootstrap -e canonistack
error: Environments configuration error: /home/arosales/.juju/environments.yaml: while parsing a block mapping
  in "<byte string>", line 1, column 1
did not find expected key
  in "<byte string>", line 12, column 3:
environments:
   aws:
    type: ec2
    control-bucket:
    admin-secret:
    access-key:
    secret-key:
    default-series: precise
    juju-origin: ppa
    ssl-hostname-verification: true
    authorized-keys-path: <key path>
  canonistack:
    type: openstack_s3
    control-bucket:
    admin-secret:
    access-key:
    secret-key:
    default-series: precise
    juju-origin: ppa
    auth-url: https://keystone.canonistack.canonical.com:443/v2.0/
    default-image-id: bb636e4f-79d7-4d6b-b13b-c7d53419fd5a
    default-instance-type: m1.small

$ vi environments.yaml

--I add the correct spacing to "canonistack" and it works:--

$ juju bootstrap -e canonistack
2013-02-20 15:29:57,616 WARNING S3 API calls not using secure transport
2013-02-20 15:29:58,886 INFO Bootstrapping environment 'canonistack' (origin: ppa type: openstack_s3)...
2013-02-20 15:30:01,938 WARNING default-instance-type is deprecated, use cli --constraints
2013-02-20 15:30:03,997 INFO 'bootstrap' command finished successfully