Hi Everaldo, I'm also using Windows 7 and I've had the same problem as Felipe, I tried including gem 'therubyracer', :platform => :ruby in my gemfile but I still cannot start the "rails server" to start, since I get the following error:
[WARNING] Please install gem 'therubyracer' to use Less. C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/less-2.2.1/lib/less/java_sc ript/v8_context.rb:2:in `require': cannot load such file -- v8 (LoadError) from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/less-2.2.1/lib /less/java_script/v8_context.rb:2:in `<top (required)>' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/less-2.2.1/lib /less/java_script.rb:9:in `require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/less-2.2.1/lib /less/java_script.rb:9:in `default_context_wrapper' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/less-2.2.1/lib /less/java_script.rb:17:in `context_wrapper' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/less-2.2.1/lib /less/loader.rb:10:in `initialize' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/less-2.2.1/lib /less.rb:14:in `new' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/less-2.2.1/lib /less.rb:14:in `<module:Less>' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/less-2.2.1/lib /less.rb:9:in `<top (required)>' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/less-rails-2.2 .3/lib/less/rails.rb:6:in `require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/less-rails-2.2 .3/lib/less/rails.rb:6:in `<top (required)>' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/less-rails-2.2 .3/lib/less-rails.rb:1:in `require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/less-rails-2.2 .3/lib/less-rails.rb:1:in `<top (required)>' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.0.22 /lib/bundler/runtime.rb:68:in `require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.0.22 /lib/bundler/runtime.rb:68:in `block (2 levels) in require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.0.22 /lib/bundler/runtime.rb:66:in `each' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.0.22 /lib/bundler/runtime.rb:66:in `block in require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.0.22 /lib/bundler/runtime.rb:55:in `each' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.0.22 /lib/bundler/runtime.rb:55:in `require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/bundler-1.0.22 /lib/bundler.rb:122:in `require' from C:/Sites/thousandtools/config/application.rb:7:in `<top (required)> ' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.3 /lib/rails/commands.rb:53:in `require' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.3 /lib/rails/commands.rb:53:in `block in <top (required)>' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.3 /lib/rails/commands.rb:50:in `tap' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/railties-3.2.3 /lib/rails/commands.rb:50:in `<top (required)>' from script/rails:6:in `require' from script/rails:6:in `<main>' Everaldo Gomes wrote in post #1062753: > Hi Felipe! > > Try this, please: > > gem 'therubyracer', :platform => :ruby > > I found this on Stack Overflow: > > http://stackoverflow.com/questions/6356450/therubyracer-gem-on-windows > > They said that you don't need to install therubyracer on Windows, > because the OS already comes with a Javascript Runtime Environment > > Best Regards, > Everaldo > > On Thu, May 31, 2012 at 8:23 PM, Felipe Pieretti Umpierre -- Posted via http://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.