*** /usr/local/lib/ruby/gems/1.9.1/gems/paypal-2.0.0/lib/notification.rb	2011-11-18 14:45:31.872267910 +0100
--- /home/masa/bin/ruby193rc1/lib/ruby/gems/1.9.1/gems/paypal-2.0.0/lib/notification.rb	2011-10-06 11:56:31.449388001 +0200
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*** 1,4 ****
--- 1,5 ----
  require 'net/http'
+ require 'active_support/core_ext/class/attribute_accessors'
  
  module Paypal
    # Parser and handler for incoming Instant payment notifications from paypal.