Puppet users - Jul 2013 - mcollective puppet module: not pulling in specified parameters

Is it okay to ask questions about the mcollective puppet module by 
puppetlabs here?

If so, I''m getting this error:

err: Could not retrieve catalog from remote server: Error 400 on SERVER: 
Failed to parse template mcollective/server.cfg.erb:
  Filepath: /usr/lib/ruby/site_ruby/1.8/puppet/parser/templatewrapper.rb
  Line: 67
  Detail: Could not find value for ''mc_topicprefix'' at 
2:/usr/local/puppet/environments/development/modules/mcollective/templates/server.cfg.erb

This is how it''s defined in the server template:

templates/server.cfg.erb:

# Basic stuff
topicprefix = <%= mc_topicprefix %>



So, I checked to make sure it was defined in params:

manifests/params.pp

class mcollective::params {

   $mc_topicprefix       = ''/topic/''


So I checked to make sure params was inherited:

manifests/server/config.pp

class mcollective::server::config(
   $config_file,
   $config,
   $server_config_owner = $mcollective::params::server_config_owner,
   $server_config_group = $mcollective::params::server_config_group
 ) inherits mcollective::params {


This is in my server''s .pp file:

 class { ''mcollective'':
           version              => ''present'',
           server               => true,
           server_config        =>
template(''mcollective/server.cfg.erb''),
           server_config_file   =>
''/etc/mcollective/server.cfg'',
           client               => ''false'',
           client_config        =>
template(''mcollective/client.cfg.erb''),
           client_config_file   =>
''/home/mcollective/.mcollective'',
           stomp_server         => ''XXXXXXXXXXXXX'',
           mc_security_provider => ''XXX'',
           mc_security_psk      => ''XXXXXXXXXXXXXXXXX'',
           }


Any thoughts on next steps for troubleshooting?

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