rails server => Booting WEBrick => Rails 4.0.2 application starting in development on http://0.0.0.0:3000 => Run `rails server -h` for more startup options => Ctrl-C to shutdown server [2013-12-26 23:29:07] INFO WEBrick 1.3.1 [2013-12-26 23:29:07] INFO ruby 2.0.0 (2013-11-22) [i386-mingw32] [2013-12-26 23:29:07] WARN TCPServer Error: Only one usage of each socket address (protocol/network address/po rt) is normally permitted. - bind(2) Exiting C:/Ruby200/lib/ruby/2.0.0/webrick/utils.rb:85:in `initialize': Only one usage of each socket address (protocol/ network address/port) is normally permitted. - bind(2) (Errno::EADDRINUSE) from C:/Ruby200/lib/ruby/2.0.0/webrick/utils.rb:85:in `new' from C:/Ruby200/lib/ruby/2.0.0/webrick/utils.rb:85:in `block in create_listeners' from C:/Ruby200/lib/ruby/2.0.0/webrick/utils.rb:82:in `each' from C:/Ruby200/lib/ruby/2.0.0/webrick/utils.rb:82:in `create_listeners' from C:/Ruby200/lib/ruby/2.0.0/webrick/server.rb:132:in `listen' from C:/Ruby200/lib/ruby/2.0.0/webrick/server.rb:113:in `initialize' from C:/Ruby200/lib/ruby/2.0.0/webrick/httpserver.rb:45:in `initialize' from C:/Ruby200/lib/ruby/gems/2.0.0/gems/rack-1.5.2/lib/rack/handler/webrick.rb:11:in `new' from C:/Ruby200/lib/ruby/gems/2.0.0/gems/rack-1.5.2/lib/rack/handler/webrick.rb:11:in `run' from C:/Ruby200/lib/ruby/gems/2.0.0/gems/rack-1.5.2/lib/rack/server.rb:264:in `start' from C:/Ruby200/lib/ruby/gems/2.0.0/gems/railties-4.0.2/lib/rails/commands/server.rb:84:in `start' from C:/Ruby200/lib/ruby/gems/2.0.0/gems/railties-4.0.2/lib/rails/commands.rb:76:in `block in <top (req uired)>' from C:/Ruby200/lib/ruby/gems/2.0.0/gems/railties-4.0.2/lib/rails/commands.rb:71:in `tap' from C:/Ruby200/lib/ruby/gems/2.0.0/gems/railties-4.0.2/lib/rails/commands.rb:71:in `<top (required)>' from bin/rails:4:in `require' from bin/rails:4:in `<main>' -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/6ec496cd-cd69-4ef7-a82e-7d766e7b0362%40googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.