Poltergeist TimeoutError when using within_window

helpers.rb

# Helpers module we will use to share common code
# Anything that should be re-used between multiple tests

module Helpers

  # last_window will grab the last window opened
  # helpful for getting a popup window
  def last_window
    page.driver.window_handles.last
  end

end

notify_me_spec.rb

describe 'notify me' do

  before :each do
    visit @products[:shoe]
    @notify_link = find('#notifyMePopupLink')
  end

  it 'shows notify me' do
    @notify_link.should be_visible
    @notify_link.click
    within_window(last_window) do
      title.should == 'Zappos.com - Notify Me!'
    end
  end
  
end

spec_helper.rb

require 'rubygems'
require 'spork'
#uncomment the following line to use spork with the debugger
#require 'spork/ext/ruby-debug'

require_relative './helpers'

@endpoint = ENV['ENDPOINT']

Spork.prefork do

  require 'capybara/rspec'
  require 'capybara/poltergeist'
  require 'launchy'
  require 'syntax'

  $: << '.' # Add current directory to the lib path

  # Register a custom Poltergeist driver.
  Capybara.register_driver :poltergeist do |app|
    # https://github.com/jonleighton/poltergeist#customization
    Capybara::Poltergeist::Driver.new(
      app,
      debug: false, # Set this to 'true' for Poltergeist-level debugging.
      # Load up Firefox when 'page.driver.debug' is used for debugging. You can
      # learn more about remote debugging here:
      # http://jonathanleighton.com/articles/2012/poltergeist-0-6-0/
      inspector: 'firefox',
      # Learn more about available PhantomJS command-line options here:
      # https://github.com/ariya/phantomjs/wiki/API-Reference
      phantomjs_options: ['--ignore-ssl-errors=yes',
                          '--local-to-remote-url-access=yes',
                          '--debug=no',
                          '--web-security=no']

      #,  phantomjs_logger: STDERR
    )
  end

  # Run examples headlessly using poltergeist.
  Capybara.default_driver = :poltergeist
  Capybara.javascript_driver = :poltergeist

  # Turn off Capybara's rack server since we're running against a remote
  # application.
  Capybara.run_server = false

  # Wait X seconds to check for ajax request results
  Capybara.default_wait_time = 2

  # The "app_host" should point to the remote web server. (In the Rakefile the
  # remote web server is assigned to the ENDPOINT environment variable.)
  unless @endpoint
    raise "\n*** ERROR: Unable to determine the proper endpoint to hit; please ensure " +
          "that ENDPOINT is set to the appropriate value. ***\n\n"
  end
  Capybara.app_host = @endpoint

  RSpec.configure do |config|
    config.treat_symbols_as_metadata_keys_with_true_values = true
    config.run_all_when_everything_filtered = true
    #config.filter_run :focus  # See the RSpec docs on filtering.

    # Run specs in random order to surface order dependencies. If you find an
    # order dependency and want to debug it, you can fix the order by providing
    # the seed, which is printed after each run.
    #     --seed 1234
    config.order = 'random'

    # Instead of having to specify ":type => :acceptance" everywhere, we include
    # the Capybara libraries here since every example will use Capybara.
    config.include Capybara::DSL
    config.include Capybara::RSpecMatchers

    # Helpers module to share code between tests easily
    config.include Helpers

    config.before :all do
      @products = {
        shoe: '/product/108000',
        long_description: '/product/108000',
        with_reviews: '/product/108000',
        with_zoom: '/product/108000',
        low_stock: '/product/108000',
        fit_survey: '/product/108000',
        oos: '/product/7161124',
        video: '/product/108000'
      }

      @dimensions = {
        oos: {
            color: 249267,
            d3: 112422,
            d4: 112162
          }
      }
    end

    config.before :each do
      page.driver.resize(1024, 1280)
    end

    config.after :each do
      page.driver.reset! #tried with and without this line

      # Capture a screenshot at the end of each example if there was a failure.
      unless example.exception.nil?
        screenshot_path =
          "./build/brazil-unit-tests/screenshots/" +
          "#{example.example_group.display_name.gsub(' ', '_')}/" +
          "#{example.description.gsub(' ', '_')}.png"
        $stderr.puts "  Screenshot: #{screenshot_path}"
        page.driver.render(screenshot_path, :full => true)
      end
    end
  end

end

Spork.each_run do

end