title: Missing these required gems: mongrel (but installed)
body: <p>i am trying to install new plugins for redmine 1.4.4.
  Having copied folder and run <strong>rake db:migrate_plugins RAILS_ENV=production</strong> rake wrote:</p>
  
  <pre><code>Missing these required gems:
    mongrel  &gt;= 0
  
  You're running:
    ruby 1.8.7.370 at C:/Ruby187/bin/ruby.exe
    rubygems 1.8.24 at C:/Ruby187/lib/ruby/gems/1.8, C:/Users/adm/.gem/ruby/1.8
  
  Run `rake gems:install` to install the missing gems.
  </code></pre>
  
  <p><strong>rake gems:install --trace</strong>:</p>
  
  <pre><code>rake aborted!
  uninitialized constant Mongrel
  ** Invoke gems:install (first_time)
  ** Invoke gems:base (first_time)
  ** Execute gems:base
  ** Invoke environment (first_time)
  ** Execute environment
  rake aborted!
  uninitialized constant Mongrel
  C:/Ruby187/lib/ruby/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:469:in `load_missing_constant'
  C:/Ruby187/lib/ruby/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:106:in `const_missing'
  C:/Ruby187/lib/ruby/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:118:in `const_missing'
  C:/Ruby187/redmine-1.4.4/config/mongrel.rb:20
  C:/Ruby187/lib/ruby/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:182:in `require'
  C:/Ruby187/lib/ruby/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:182:in `require'
  C:/Ruby187/lib/ruby/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:547:in `new_constants_in'
  C:/Ruby187/lib/ruby/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:182:in `require'
  C:/Ruby187/redmine-1.4.4/config/environment.rb:62
  C:/Ruby187/lib/ruby/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:182:in `require'
  C:/Ruby187/lib/ruby/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:182:in `require'
  C:/Ruby187/lib/ruby/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:547:in `new_constants_in'
  C:/Ruby187/lib/ruby/gems/1.8/gems/activesupport-2.3.14/lib/active_support/dependencies.rb:182:in `require'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rails-2.3.14/lib/tasks/misc.rake:4
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `execute'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `invoke_with_call_chain'
  C:/Ruby187/lib/ruby/1.8/monitor.rb:242:in `synchronize'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rails-2.3.14/lib/tasks/gems.rake:17
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `execute'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `invoke_with_call_chain'
  C:/Ruby187/lib/ruby/1.8/monitor.rb:242:in `synchronize'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:176:in `invoke_prerequisites'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:174:in `each'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:174:in `invoke_prerequisites'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:157:in `invoke_with_call_chain'
  C:/Ruby187/lib/ruby/1.8/monitor.rb:242:in `synchronize'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:116:in `invoke_task'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `top_level'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `top_level'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `run'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
  C:/Ruby187/lib/ruby/gems/1.8/gems/rake-0.9.2.2/bin/rake:33
  C:/Ruby187/bin/rake:23:in `load'
  C:/Ruby187/bin/rake:23
  Tasks: TOP =&gt; environment
  </code></pre>
  
  <p><strong>gem list</strong> shows that mongrel (1.1.5 x86-mingw32) is installed.
  Everything runs on windows 2008 server x64. Redmine working at mongrel win service.</p>