title: For Rails, if there is a project that uses Rails 3.0.0, it looks for bundler 1.0.0 and it is there but rails server won't run?
body: <p>I have a Rails 3.0.0 project that was using Ruby 1.9.2.  Now that I tried to run it on a new computer with the current rvm, it will say:</p>
  
  <pre><code>$ rails s
  /Users/michael/.rvm/gems/ruby-1.9.2-p318@global/gems/bundler-1.1.3/lib/bundler/resolver.rb:129:in `block in resolve': Bundler could not find compatible versions for gem "bundler": (Bundler::VersionConflict)
    In Gemfile:
      rails (= 3.0.0) ruby depends on
        bundler (~&gt; 1.0.0) ruby
  
    Current Bundler version:
      bundler (1.1.3)
  </code></pre>
  
  <p>but I already used</p>
  
  <pre><code>gem install rails -v 3.0.0
  gem install bundler -v 1.0.0
  gem install bundler -v 1.0.2
  </code></pre>
  
  <p>so that when I <code>gem list</code>, I will see</p>
  
  <pre><code>bundler (1.1.3, 1.0.22, 1.0.0)
  rails (3.0.0)
  </code></pre>
  
  <p>so how come it is still complaining that Rails 3.0.0 requires bundler 1.0.0 and it is not there?   How to make the project run again?</p>
  
  <p>Update: my Gemfile is mostly comments except:</p>
  
  <pre><code>source 'http://rubygems.org'
  
  gem 'rails', '3.0.0'      
  gem 'sqlite3-ruby', :require =&gt; 'sqlite3'
  </code></pre>
  
  <p>Update 2: if I run <code>bundle check</code>:</p>
  
  <pre><code>$ bundle check
  Your Gemfile's dependencies could not be satisfied
  Install missing gems with `bundle install`
  
  $ bundle install
  Fetching gem metadata from http://rubygems.org/.........
  Bundler could not find compatible versions for gem "bundler":
    In Gemfile:
      rails (= 3.0.0) ruby depends on
        bundler (~&gt; 1.0.0) ruby
  
    Current Bundler version:
      bundler (1.1.3)
  
  This Gemfile requires a different version of Bundler.
  Perhaps you need to update Bundler by running `gem install bundler`?
  </code></pre>