[Rails] rails 3 initialize module, running cucumber

[Me]

I have this in my environment file, I get "The error occurred while 
evaluating nil.[] (NoMethodError)" on the  S3Config.key= line  when running 
cucumber.  Why is it not loading up the module when running cucumber?

module S3Config
  mattr_accessor :key
  mattr_accessor :sec
end

class ActiveRecord::Base
  include S3Config
  extend DynamicMethods
end

S3Config.key = AppConfig['access_key_id']
S3Config.sec = AppConfig['secret_access_key']
ActionMailer::Base.default_url_options[:host]=AppConfig['base_url']

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