Did you used ruby (rvm use 2.1.2), create an app (rails new app_name) and 
changed to it's directory (cd app_name)?

On Sunday, January 18, 2015 at 6:54:46 PM UTC+1, Nanduchocom wrote:
>
> I install ruby 2.1 and rails 4.2 in centos 7,
>
> But, when i try init:   
> rails s
> Appear this messsages:
>
> /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:128:in
>  
> `require': cannot load such file -- rails/app_rails_loader (LoadError)
>         from 
> /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:128:in
>  
> `rescue in require'
>         from 
> /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:39:in
>  
> `require'
>         from 
> /usr/local/rvm/gems/ruby-2.1.2/gems/railties-4.1.8/lib/rails/cli.rb:1:in 
> `<top (required)>'
>         from 
> /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:69:in
>  
> `require'
>         from 
> /usr/local/rvm/rubies/ruby-2.1.2/lib/ruby/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:69:in
>  
> `require'
>         from 
> /usr/local/rvm/gems/ruby-2.1.2/gems/railties-4.1.8/bin/rails:9:in `<top 
> (required)>'
>         from /usr/local/rvm/gems/ruby-2.1.2/bin/rails:23:in `load'
>         from /usr/local/rvm/gems/ruby-2.1.2/bin/rails:23:in `<main>'
>         from 
> /usr/local/rvm/gems/ruby-2.1.2/bin/ruby_executable_hooks:15:in `eval'
>         from 
> /usr/local/rvm/gems/ruby-2.1.2/bin/ruby_executable_hooks:15:in `<main>'
>
> I need help, i don't find more information in Centos or Ruby sites.
>
>

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