title: Ruby on Rails server initiation error
body: <p>First time using rails. I have everything installed. I tried to make an application work and do the server but it keeps failing. This is what I get. If anyone can help thank you.
  Im on a windows 10 operating system.</p>
  
  <pre><code>C:\\&gt;cd C:\test_app
  
  C:\test_app&gt;rails s &lt;br&gt;
  C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.6.2-x64-mingw32/lib/nokogiri
  .rb:29:in `require': cannot load such file -- nokogiri/nokogiri (LoadError)
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.6.2-x64-mingw32
  /lib/nokogiri.rb:29:in `rescue in &lt;top (required)&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/nokogiri-1.6.6.2-x64-mingw32
  /lib/nokogiri.rb:25:in `&lt;top (required)&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/loofah-2.0.3/lib/loofah.rb:3
  :in `require'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/loofah-2.0.3/lib/loofah.rb:3
  :in `&lt;top (required)&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rails-html-sanitizer-1.0.2/l
  ib/rails-html-sanitizer.rb:2:in `require'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/rails-html-sanitizer-1.0.2/l
  ib/rails-html-sanitizer.rb:2:in `&lt;top (required)&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_
  view/helpers/sanitize_helper.rb:3:in `require'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_
  view/helpers/sanitize_helper.rb:3:in `&lt;top (required)&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_
  view/helpers/text_helper.rb:32:in `&lt;module:TextHelper&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_
  view/helpers/text_helper.rb:29:in `&lt;module:Helpers&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_
  view/helpers/text_helper.rb:6:in `&lt;module:ActionView&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_
  view/helpers/text_helper.rb:4:in `&lt;top (required)&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_
  view/helpers/form_tag_helper.rb:18:in `&lt;module:FormTagHelper&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_
  view/helpers/form_tag_helper.rb:14:in `&lt;module:Helpers&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_
  view/helpers/form_tag_helper.rb:8:in `&lt;module:ActionView&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_
  view/helpers/form_tag_helper.rb:6:in `&lt;top (required)&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_
  view/helpers/form_helper.rb:4:in `require'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_
  view/helpers/form_helper.rb:4:in `&lt;top (required)&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_
  view/helpers.rb:50:in `&lt;module:Helpers&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_
  view/helpers.rb:4:in `&lt;module:ActionView&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/actionview-4.2.4/lib/action_
  view/helpers.rb:3:in `&lt;top (required)&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sp
  rockets/rails/legacy_asset_tag_helper.rb:7:in `&lt;module:LegacyAssetTagHelper&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sp
  rockets/rails/legacy_asset_tag_helper.rb:6:in `&lt;module:Rails&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sp
  rockets/rails/legacy_asset_tag_helper.rb:4:in `&lt;module:Sprockets&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sp
  rockets/rails/legacy_asset_tag_helper.rb:3:in `&lt;top (required)&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sp
  rockets/rails/helper.rb:45:in `require'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sp
  rockets/rails/helper.rb:45:in `&lt;module:Helper&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sp
  rockets/rails/helper.rb:7:in `&lt;module:Rails&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sp
  rockets/rails/helper.rb:6:in `&lt;module:Sprockets&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sp
  rockets/rails/helper.rb:5:in `&lt;top (required)&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sp
  rockets/railtie.rb:6:in `require'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sprockets-rails-2.3.3/lib/sp
  rockets/railtie.rb:6:in `&lt;top (required)&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.4/lib/sass/ra
  ils/railtie.rb:3:in `require'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.4/lib/sass/ra
  ils/railtie.rb:3:in `&lt;top (required)&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.4/lib/sass/ra
  ils.rb:11:in `require'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.4/lib/sass/ra
  ils.rb:11:in `&lt;top (required)&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.4/lib/sass-ra
  ils.rb:1:in `require'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-rails-5.0.4/lib/sass-ra
  ils.rb:1:in `&lt;top (required)&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/r
  untime.rb:76:in `require'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/r
  untime.rb:76:in `block (2 levels) in require'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/r
  untime.rb:72:in `each'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/r
  untime.rb:72:in `block in require'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/r
  untime.rb:61:in `each'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler/r
  untime.rb:61:in `require'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/bundler-1.10.6/lib/bundler.r
  b:134:in `require'
          from C:/test_app/config/application.rb:7:in `&lt;top (required)&gt;'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/com
  mands/commands_tasks.rb:78:in `require'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/com
  mands/commands_tasks.rb:78:in `block in server'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/com
  mands/commands_tasks.rb:75:in `tap'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/com
  mands/commands_tasks.rb:75:in `server'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/com
  mands/commands_tasks.rb:39:in `run_command!'
          from C:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/railties-4.2.4/lib/rails/com
  mands.rb:17:in `&lt;top (required)&gt;'
          from bin/rails:4:in `require'
          from bin/rails:4:in `&lt;main&gt;'
  </code></pre>