title: no such file to load -- activesupport (LoadError)
body: <p>I can't get the db2s3 gem to run on my rails 3 application.  </p>
  
  <pre><code>  /usr/lib/ruby/gems/1.8/gems/db2s3-0.3.1/lib/db2s3.rb:1:in `require': no such file  to  load -- activesupport (LoadError)
  from /usr/lib/ruby/gems/1.8/gems/db2s3-0.3.1/lib/db2s3.rb:1
  from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.0/lib/bundler/runtime.rb:64:in `require'
  from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.0/lib/bundler/runtime.rb:64:in `require'
  from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.0/lib/bundler/runtime.rb:62:in `each'
  from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.0/lib/bundler/runtime.rb:62:in `require'
  from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.0/lib/bundler/runtime.rb:51:in `each'
  from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.0/lib/bundler/runtime.rb:51:in `require'
  from /usr/lib/ruby/gems/1.8/gems/bundler-1.0.0/lib/bundler.rb:112:in `require'
  from /home/sean/chief/config/application.rb:7
  from /usr/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/commands.rb:28:in        `require'
  from /usr/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/commands.rb:28
  from /usr/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/commands.rb:27:in `tap'
  from /usr/lib/ruby/gems/1.8/gems/railties-3.0.0/lib/rails/commands.rb:27
  from script/rails:6:in `require'
  from script/rails:6
  </code></pre>