Puppet users - Oct 2013 - puppetlabs-mcollective, ENC YAML, "Invalid tag"

I''m trying to use the puppetlabs-mcollective module as described in the
documentation. I use a homegrown ENC, and am having some issues with the
YAML. This is with Puppet 3.3.0 open source master and agent.

1)
ENC YAML includes:
classes:
  ::mcollective:
    client: true
    middleware: true
    middleware_hosts:
    - pupmasdev1
Puppet output:
Error: Could not retrieve catalog from remote server: Error 400 on
SERVER: Invalid tag ":mcollective" on node pupmasdev1
Warning: Not using cache on failed catalog
Error: Could not retrieve catalog; skipping run

2)
YAML:
classes:
  mcollective:
    client: true
    middleware: true
    middleware_hosts:
    - pupmasdev1
Puppet Output:
Error: Could not retrieve catalog from remote server: Error 400 on
SERVER: Could not find class mcollective for pupmasdev1 on node pupmasdev1
Warning: Not using cache on failed catalog
Error: Could not retrieve catalog; skipping run

3)
YAML:
classes:
  ''::mcollective'':
    client: true
    middleware: true
    middleware_hosts:
    - pupmasdev1
Puppet Output:
Error: Could not retrieve catalog from remote server: Error 400 on
SERVER: Invalid tag "::mcollective" on node pupmasdev1
Warning: Not using cache on failed catalog
Error: Could not retrieve catalog; skipping run

I''m banging my head against the wall with this... and I can''t
seem to
find a syntax for the YAML (certainly nothing that our ENC, using
PyYAML) that puppet will accept. Any ideas? Or do I just need to resort
to a wrapper class?

Thanks,
Jason Antman

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