title: Bundler could not find compatible versions for gem "activesupport" and "railties"
body: <p>I successfully installed the Railsinstaller on a Win 8 PC and started a project. I set up github and pushed the project to it. On the first PC everything was working find. Then I installed the Railsinstaller on a second Win 8 PC. On the second PC, I ran <code>gem update rails</code>. Then I ran <code>git clone [url]</code> and that was also successful. But I cannot start the rails server because a gem is missing. Here is the output of <code>gem list</code>:</p>
  
  <pre><code>actionmailer (4.0.0, 3.2.13)
  actionpack (4.0.0, 4.0.0.rc2, 3.2.13)
  activemodel (4.0.0, 3.2.13)
  activerecord (4.0.0, 3.2.13)
  activerecord-deprecated_finders (1.0.3)
  activerecord-sqlserver-adapter (3.2.10)
  activeresource (3.2.13)
  activesupport (4.0.0, 4.0.0.rc2, 3.2.13)
  arel (4.0.0, 3.0.2)
  atomic (1.1.10)
  bcrypt-ruby (3.1.1 x86-mingw32)
  bigdecimal (1.1.0)
  builder (3.1.4, 3.0.4)
  bundler (1.3.4)
  coffee-rails (4.0.0, 3.2.2)
  coffee-script (2.2.0)
  coffee-script-source (1.6.1)
  devise (3.0.0)
  diff-lcs (1.2.4)
  erubis (2.7.0)
  execjs (1.4.0)
  hike (1.2.1)
  i18n (0.6.4, 0.6.1)
  io-console (0.3)
  journey (1.0.4)
  jquery-rails (3.0.4, 2.2.1)
  json (1.5.5)
  mail (2.5.3)
  mime-types (1.21)
  minitest (4.7.5, 2.5.1)
  multi_json (1.7.1)
  orm_adapter (0.4.0)
  pg (0.14.1 x86-mingw32)
  polyglot (0.3.3)
  rack (1.5.2, 1.4.5)
  rack-cache (1.2)
  rack-ssl (1.3.3)
  rack-test (0.6.2)
  rails (4.0.0, 3.2.13)
  railties (4.0.0, 4.0.0.rc2, 3.2.13)
  rake (10.0.3, 0.9.2.2)
  rb-readline (0.4.2)
  rdoc (3.9.5)
  rspec (2.14.1)
  rspec-core (2.14.4)
  rspec-expectations (2.14.0)
  rspec-mocks (2.14.1)
  rspec-rails (2.14.0)
  rubyzip (0.9.9)
  sass (3.2.7)
  sass-rails (4.0.0, 3.2.6)
  sprockets (2.10.0, 2.2.2)
  sprockets-rails (2.0.0)
  sqlite3 (1.3.7 x86-mingw32)
  sqlite3-ruby (1.3.3)
  thor (0.18.1, 0.17.0)
  thread_safe (0.1.0)
  tilt (1.3.6)
  tiny_tds (0.5.1 x86-mingw32)
  treetop (1.4.12)
  tzinfo (0.3.37)
  warden (1.2.3)
  </code></pre>
  
  <p>I tried <code>bundle install</code>:</p>
  
  <pre><code>Bundler could not find compatible versions for gem "railties":
    In Gemfile:
      rspec-rails (= 2.6.1) x86-mingw32 depends on
        railties (~&gt; 3.0) x86-mingw32
  
      sass-rails (~&gt; 4.0.0) x86-mingw32 depends on
        railties (4.0.0)
  </code></pre>
  
  <p>and <code>bundle update</code>:</p>
  
  <pre><code>Bundler could not find compatible versions for gem "activesupport":
    In Gemfile:
      rspec-rails (= 2.6.1) x86-mingw32 depends on
        activesupport (~&gt; 3.0) x86-mingw32
  
      rails (= 4.0.0) x86-mingw32 depends on
        activesupport (4.0.0)
  
  Bundler could not find compatible versions for gem "railties":
    In Gemfile:
      rails (= 4.0.0) x86-mingw32 depends on
        railties (= 4.0.0) x86-mingw32
  
      sass-rails (~&gt; 4.0.0) x86-mingw32 depends on
        railties (4.0.0.rc2)
  </code></pre>
  
  <p>but that didn't help. I also deleted gemfile.lock and ran the above mentioned commands but still no luck. What I find strange is that it complains of version conflict of gems, but when I look at the gem file I see that all the necessary versions are installed. Could you please point me to what I might be doing wrong as I am completely out of ideas? Thank you.</p>
  
  <p>UPDATE:</p>
  
  <p>This is my gemfile:</p>
  
  <pre><code>source 'https://rubygems.org'
  
  # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
  gem 'rails', '4.0.0'
  
  # Use sqlite3 as the database for Active Record
  #gem 'sqlite3'
  
  # Use SCSS for stylesheets
  gem 'sass-rails', '~&gt; 4.0.0'
  
  # Use Uglifier as compressor for JavaScript assets
  gem 'uglifier', '&gt;= 1.3.0'
  
  # Use CoffeeScript for .js.coffee assets and views
  gem 'coffee-rails', '~&gt; 4.0.0'
  
  # See https://github.com/sstephenson/execjs#readme for more supported runtimes
  # gem 'therubyracer', platforms: :ruby
  
  # Use jquery as the JavaScript library
  gem 'jquery-rails'
  
  # Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
  gem 'turbolinks'
  
  # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
  gem 'jbuilder', '~&gt; 1.2'
  
  group :doc do
    # bundle exec rake doc:rails generates the API under doc/api.
    gem 'sdoc', require: false
  end
  
  # Use ActiveModel has_secure_password
  # gem 'bcrypt-ruby', '~&gt; 3.0.0'
  
  # Use unicorn as the app server
  # gem 'unicorn'
  
  # Use Capistrano for deployment
  # gem 'capistrano', group: :development
  
  # Use debugger
  # gem 'debugger', group: [:development, :test]
  
  group :development do
    gem 'sqlite3'
    gem 'rspec-rails', '2.6.1', :require =&gt; 'rspec-rails'
    gem 'faker', '0.3.1'
  end
  
  group :test do
      gem 'sqlite3'
      gem 'rspec-rails', '2.6.1', :require =&gt; 'rspec-rails'
      gem 'webrat', '0.7.1'
      gem 'factory_girl_rails', '1.0'
      gem 'turn', :require =&gt; false
  end
  
  group :production do
      gem 'pg'
  end
  </code></pre>