Conference - Processing event sequence throws a nil on the event_queue about punchblock HOT 2 CLOSED

    it "Should put one caller in conference and then hangup" do
      @tropo1.script_content = <<-SCRIPT_CONTENT
        call 'sip:' + '#{@config['tropo2_server']['sip_uri']}'
        wait #{@config['tropo1']['wait_to_hangup']}
      SCRIPT_CONTENT
      @tropo1.place_call @config['tropo1']['session_url']

      call = @tropo2.get_call
      call.call_event.should be_a_valid_call_event      
      call.answer.should eql true

      call.conference(:name => '1234').should eql true
      call.hangup.should eql true
      call.next_event.should be_a_valid_conference_event
      call.next_event.should be_a_valid_hangup_event

      call.last_event?(@config['tropo2_queue']['last_stanza_timeout']).should eql true
    end