It looks like the win32-event gem is required, but this isn't mentioned in the installation docs. Once I did gem install win32-event it worked like a charm.
[C:\Users\charlesr\My Dropbox\Projects\SARG\Prototype]livereload
Version: 1.4 (compatible with browser extension versions 1.4.x)
Port: 35729
Watching: C:/Users/charlesr/My Dropbox/Projects/SARG/Prototype
- extensions: .html .css .js .png .gif .jpg .php .php5 .py .rb .erb .haml .sass
- excluding changes in: */.git/* */.svn/* */.hg/*
- with a grace period of 0.05 sec after each change
LiveReload is waiting for browser to connect.
C:/Users/charlesr/Tools/Ruby187/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require': no such file to load -- win32/event (LoadError)
from C:/Users/charlesr/Tools/Ruby187/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from C:/Users/charlesr/Tools/Ruby187/lib/ruby/gems/1.8/gems/win32-changenotify-0.5.1/lib/win32/changenotify.rb:1
from C:/Users/charlesr/Tools/Ruby187/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `gem_original_require'
from C:/Users/charlesr/Tools/Ruby187/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:36:in `require'
from C:/Users/charlesr/Tools/Ruby187/lib/ruby/gems/1.8/gems/em-dir-watcher-0.9.4/lib/em-dir-watcher/platform/windows/monitor.rb:4
It looks like the win32-event gem is required, but this isn't mentioned in the installation docs. Once I did
gem install win32-event
it worked like a charm.