title: rails server not starting after switching form version 4 to version 3
body: <p>I am using rails version 3.2.6 and i recently downgraded from 4.0 because i wanted to work on a 3 version environment because the tutorial im following they are using version 3.
  I am on a windows 7 machine and this is what i have done so far. 
  i first did gem install rails -v 3.2.6<br/>
  then i did gem uninstall rails, and chose the version i wanted to install.<br/>
  i then downgraded the gem that were dependent on rails version 4 and i was not getting any errors when running bundle install.<br/>
  now when i try to do rails s to see what broke on my page the server never starts and i get a bunch of file names:</p>
  
  <pre><code>=&gt; Booting WEBrick
  =&gt; Rails 3.2.6 application starting in development on http://0.0.0.0:3000
  =&gt; Call with -d to detach
  =&gt; Ctrl-C to shutdown server
  Exiting
  C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activerecord-3.2.6/lib/active_record/dynamic_matchers.rb:50:in `method_missing'C:/Ruby200-         x64/lib/ruby/gems/2.0.0/gems/orm_adapter-0.5.0/lib/orm_adapter/adapters/active_record.rb:81: warning: already initialized constant ActiveRecord::Base::OrmAdapter
  C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/orm_adapter-0.5.0/lib/orm_adapter/adapters/active_record.rb:81: warning: previous definition of OrmAdapter was here
  : undefined method `migration_error=' for #&lt;Class:0x000000053c7850&gt; (NoMethodError)
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activerecord-3.2.6/lib/active_record/railtie.rb:66:in `block (3 levels) in &lt;class:Railtie&gt;'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activerecord-3.2.6/lib/active_record/railtie.rb:65:in `each'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activerecord-3.2.6/lib/active_record/railtie.rb:65:in `block (2 levels) in &lt;class:Railtie&gt;'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activesupport-3.2.6/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activesupport-3.2.6/lib/active_support/lazy_load_hooks.rb:36:in `execute_hook'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activesupport-3.2.6/lib/active_support/lazy_load_hooks.rb:43:in `block in run_load_hooks'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activesupport-3.2.6/lib/active_support/lazy_load_hooks.rb:42:in `each'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activesupport-3.2.6/lib/active_support/lazy_load_hooks.rb:42:in `run_load_hooks'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activerecord-3.2.6/lib/active_record/base.rb:721:in `&lt;top (required)&gt;'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/devise-3.2.4/lib/devise/orm/active_record.rb:3:in `&lt;top (required)&gt;'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:251:in `require'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:251:in `block in require'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:236:in `load_dependency'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:251:in `require'
      from C:/Users/Beans/Desktop/TestMaker/config/initializers/devise.rb:22:in `block in &lt;top (required)&gt;'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/devise-3.2.4/lib/devise.rb:288:in `setup'
      from C:/Users/Beans/Desktop/TestMaker/config/initializers/devise.rb:3:in `&lt;top (required)&gt;'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:245:in `load'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:245:in `block in load'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:236:in `load_dependency'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:245:in `load'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-3.2.6/lib/rails/engine.rb:588:in `block (2 levels) in &lt;class:Engine&gt;'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-3.2.6/lib/rails/engine.rb:587:in `each'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-3.2.6/lib/rails/engine.rb:587:in `block in &lt;class:Engine&gt;'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-3.2.6/lib/rails/initializable.rb:30:in `instance_exec'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-3.2.6/lib/rails/initializable.rb:30:in `run'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-3.2.6/lib/rails/initializable.rb:55:in `block in run_initializers'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-3.2.6/lib/rails/initializable.rb:54:in `each'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-3.2.6/lib/rails/initializable.rb:54:in `run_initializers'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-3.2.6/lib/rails/application.rb:136:in `initialize!'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-3.2.6/lib/rails/railtie/configurable.rb:30:in `method_missing'
      from C:/Users/Beans/Desktop/TestMaker/config/environment.rb:5:in `&lt;top (required)&gt;'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:251:in `require'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:251:in `block in require'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:236:in `load_dependency'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/activesupport-3.2.6/lib/active_support/dependencies.rb:251:in `require'
      from C:/Users/Beans/Desktop/TestMaker/config.ru:3:in `block in &lt;main&gt;'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/rack-1.4.5/lib/rack/builder.rb:51:in `instance_eval'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/rack-1.4.5/lib/rack/builder.rb:51:in `initialize'
      from C:/Users/Beans/Desktop/TestMaker/config.ru:in `new'
      from C:/Users/Beans/Desktop/TestMaker/config.ru:in `&lt;main&gt;'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/rack-1.4.5/lib/rack/builder.rb:40:in `eval'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/rack-1.4.5/lib/rack/builder.rb:40:in `parse_file'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/rack-1.4.5/lib/rack/server.rb:200:in `app'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-3.2.6/lib/rails/commands/server.rb:46:in `app'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/rack-1.4.5/lib/rack/server.rb:304:in `wrapped_app'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/rack-1.4.5/lib/rack/server.rb:254:in `start'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-3.2.6/lib/rails/commands/server.rb:70:in `start'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-3.2.6/lib/rails/commands.rb:55:in `block in &lt;top (required)&gt;'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-3.2.6/lib/rails/commands.rb:50:in `tap'
      from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/railties-3.2.6/lib/rails/commands.rb:50:in `&lt;top (required)&gt;'
      from bin/rails:4:in `require'
      from bin/rails:4:in `&lt;main&gt;'
  </code></pre>
  
  <p>i know this might be a bunch of garbage to some, but if someone could help me that would be awesome. if you need more information, please let me know.
  thank you in advance.</p>