<internal:lib/rubygems/custom_require>:29:in `require': no such file to load — active_support (LoadError

Question

I hich to create a new rails project

I have this

 rene@Linux-Ubuntu:~/rails_projets$ rails new premier_app

:29:in require': no such file to load -- active_support (LoadError) from <internal:lib/rubygems/custom_require>:29:inrequire' from /usr/lib/ruby/vendor_ruby/railties/lib/rails_generator.rb:30:in <top (required)>' from <internal:lib/rubygems/custom_require>:29:inrequire' from :29:in require' from /usr/lib/ruby/vendor_ruby/railties/bin/rails:16:in'

I have :> Ubuntu 11.10 .. ruby 1.9.2p218 .. rails 2.3.14 .. gem 1.8.17 .. zlib installed

When i make $ gem install rails --pre

I have this

   rene@Linux-Ubuntu:~/rails_projets$  gem install rails --pre

ERROR: Loading command: install (LoadError) no such file to load -- zlib ERROR: While executing gem ... (NameError) uninitialized constant Gem::Commands::InstallCommand

What i mist ?

Thank for help

René LeBlanc

Answer 1

I had the same problem on rails 3.2.3 and I have fix it (on Ubuntu 11.10). Try this. First check which rvm gemset you are using.

user1$: rvm gemset list

this command give you list of gemsets like this

gemsets for ruby 1.9.3-p125 (found in user1/.rvm/...something.../ruby-1.9.3-p125)
=> rails31

now you know which gemset you want to use if more than one you can also delete it. Then set gemset by using

user1$: rvm gemset use rails31

and then I have tried rails -v and it's require error is gone! Fun!