title: can't use db:seed in rails
body: <p>I updated my rails gem to 2.3.5 but I keep getting this error when running db:seed:</p>
  
  <pre><code>$ rake db:seed --trace
  (in c:/Documents and Settings/Owner/workspace/thepatstudio)
  rake aborted!
  Don't know how to build task 'db:seed'
  c:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:1728:in `[]'
  c:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2050:in `invoke_task'
  c:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level'
  c:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `each'
  c:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in `top_level'
  c:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
  c:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2023:in `top_level'
  c:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2001:in `run'
  c:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling'
  c:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:1998:in `run'
  c:/Ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/bin/rake:31
  c:/Ruby/bin/rake:19:in `load'
  c:/Ruby/bin/rake:19
  
  ~/workspace/thepatstudio (master)
      $ rails --version
      Rails 2.3.5
  </code></pre>
  
  <p>My environment.rb has the correct rails version on it and I also ran rake <code>rails:update</code>. What can I do?</p>