Your Ruby version is 1.9.3, but your Gemfile specified 2.1.0
ruby-on-rails, rvm
Solution
The problem is your `PATH` environment variable, it has to match `GEM_PATH` and in your case it does not. To fix it run:
rvm get stable --auto-dotfiles
This will update your shell initialization files and make sure rvm is properly loaded. Then open a new terminal (close the application and open it again), and run:
rvm use 2.1.0
On both steps read all the messages printed to you. They are important and contain information about how to fix your problems. RVM detects problems and tries to fix them or warns you about them if they can not or should not be fixed automatically.
Problem
When I run ``` rails server ``` I get the error. There is some problem loading the gemsets ``` $rvm list rvm rubies ruby-1.9.3-p484 [ i686 ] ruby-2.0.0-p353 [ i686 ] =* ruby-2.1.0 [ i686 ] # => - current # =* - current && default # * - default $ruby -v ruby 2.1.0p0 (2013-12-25 revision 44422) [i686-linux] $rails -v Your Ruby version is 1.9.3, but your Gemfile specified 2.1.0 $bundle show rails /home/prasad/.rvm/gems/ruby-2.1.0/gems/rails-4.0.1 $bundle exec rails s Your Ruby version is 1.9.3, but your Gemfile specified 2.1.0 bundle exec ruby -v ruby 2.1.0p0 (2013-12-25 revision 44422) [i686-linux] ``` I did `bundle install` and tried to start the rails server but it gave the same error. bashrc ``` PATH=$PATH:$HOME/.rvm/bin # Add RVM to PATH for scripting [[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm" ``` Gemfile ``` source 'https://rubygems.org' ruby '2.1.0' # Bundle edge Rails instead: gem 'rails', github: 'rails/rails' gem 'rails', '4.0.1' # Use SCSS for stylesheets gem 'sass-rails', '~> 4.0.0' # Use Uglifier as compressor for JavaScript assets gem 'uglifier', '2.3.1' # Use CoffeeScript for .js.coffee assets and views gem 'coffee-rails', '~> 4.0.0' # Use jquery as the JavaScript library gem 'jquery-rails', '3.0.4' gem 'haml', '4.0.4' gem 'actionpack-page_caching', '1.0.2' #use caches_pages in rails 4 gem 'twitter' gem 'mina' group :production do gem 'dalli', '2.6.4' gem 'therubyracer' end group :test do gem 'watir-rails' end group :staging do gem 'rails_12factor' end # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder gem 'jbuilder', '~> 1.2' group :doc do # bundle exec rake doc:rails generates the API under doc/api. gem 'sdoc', require: false end ``` UPDATE I tried restarting my computer, but it did not fix the problem.