Middleman Livereload not working in Win 7 64bit

I already post the question here but seems no one knows my problem, also I just read _http://forum.middlemanapp.com/t/middleman-livereload-windows-7-64-bit-and-ruby2-0-issues/516, but I don’t get the answer.

I’m running

  • Windows 7 64-bit
  • Ruby 2.0.0
  • Middleman 3.1.3
  • Middleman-livereload 3.1.0

In my Gemfile

# If you have OpenSSL installed, we recommend updating
# the following line to use "https"
source 'http://rubygems.org'

gem "middleman", "~>3.1.3"

# Live-reloading plugin
gem "middleman-livereload", "~> 3.1.0"

# For faster file watcher updates:
gem "wdm", "~> 0.1.0" # Windows

# Susy grids
gem 'susy', "~> 1.0.9" # Susy

# Cross-templating language block fix for Ruby 1.8
platforms :mri_18 do
  gem "ruby18_source_location"
end

Enable activate :livereload in config.rb and I get this error http://pastebin.com/9bxEa2uW