I have a problem with the Lucid theme:

Processing Base#permalink (for 193.190.10.5 at 2006-05-30 05:31:52) [GET]
Parameters: {"month"=>"03", "title"=>"cassowary-net-0-2-2", "action"=>"permalink", "day"=>"16", "controller"=>"articles", "year"=>"2006"}

ActionView::TemplateError (uninitialized constant Sidebars::SidebarController) on line #57 of themes/lucid/layouts/default.rhtml:
54: <div id="subcol">^M
55: <div class="bt"><div></div></div>^M
56: <div id="sc2">^M
57: <%= render_component(:controller => 'sidebars/sidebar', :action => 'display_plugins') %>^M
58: <%= link_to image_tag("powered.gif"), "http://typo.leetsoft.com/", {:class => "powered" } %>^M
59: </div>^M
60: </div> <!-- end #subcol -->^M

vendor/rails/activesupport/lib/active_support/dependencies.rb:100:in @const_missing'

vendor/rails/activesupport/lib/active_support/inflector.rb:161:in @constantize'

vendor/rails/activesupport/lib/active_support/core_ext/string/inflections.rb:59:in @constantize'

vendor/rails/actionpack/lib/action_controller/components.rb:143:in @component_class'

vendor/rails/actionpack/lib/action_controller/components.rb:133:in @component_response'

vendor/rails/actionpack/lib/action_controller/components.rb:108:in @render_component_as_string'

vendor/rails/actionpack/lib/action_controller/components.rb:169:in @component_logging_with_unfiltered_options'

lib/rails_patch/components.rb:10:in @component_logging'

vendor/rails/actionpack/lib/action_controller/components.rb:107:in @render_component_as_string'

vendor/rails/actionpack/lib/action_controller/components.rb:44:in @render_component'

#{RAILS_ROOT}/themes/lucid/layouts/default.rhtml:57:in @_run_rhtml+home_jozillab_typo_themes_lucid_layouts_default'

vendor/rails/actionpack/lib/action_view/base.rb:314:in @compile_and_render_template'

vendor/rails/actionpack/lib/action_view/base.rb:290:in @render_template'

vendor/rails/actionpack/lib/action_view/base.rb:249:in @render_file'

vendor/rails/actionpack/lib/action_controller/layout.rb:249:in @render_without_benchmark'

vendor/rails/actionpack/lib/action_controller/benchmarking.rb:53:in @render'

/usr/lib/ruby/1.8/benchmark.rb:293:in @measure'

vendor/rails/actionpack/lib/action_controller/benchmarking.rb:53:in @render'

app/controllers/articles_controller.rb:64:in @rescue_action_in_public'

vendor/rails/actionpack/lib/action_controller/rescue.rb:33:in @rescue_action'

vendor/rails/actionpack/lib/action_controller/rescue.rb:108:in @perform_action'

vendor/rails/actionpack/lib/action_controller/base.rb:381:in @process_without_filters'

vendor/rails/actionpack/lib/action_controller/filters.rb:377:in @process_without_session_management_support'

vendor/rails/actionpack/lib/action_controller/session_management.rb:117:in @process'

vendor/rails/railties/lib/dispatcher.rb:38:in @dispatch'

vendor/rails/railties/lib/webrick_server.rb:115:in @handle_dispatch'

vendor/rails/railties/lib/webrick_server.rb:81:in @service'

/usr/lib/ruby/1.8/webrick/httpserver.rb:104:in @service'

/usr/lib/ruby/1.8/webrick/httpserver.rb:65:in @run'

/usr/lib/ruby/1.8/webrick/server.rb:173:in @start_thread'

/usr/lib/ruby/1.8/webrick/server.rb:162:in @start_thread'

/usr/lib/ruby/1.8/webrick/server.rb:95:in @start'

/usr/lib/ruby/1.8/webrick/server.rb:92:in @start'

/usr/lib/ruby/1.8/webrick/server.rb:23:in @start'

/usr/lib/ruby/1.8/webrick/server.rb:82:in @start'

vendor/rails/railties/lib/webrick_server.rb:67:in @dispatch'

vendor/rails/railties/lib/commands/servers/webrick.rb:59

/usr/lib/site_ruby/1.8/rubygems/custom_require.rb:18:in @require'

vendor/rails/activesupport/lib/active_support/dependencies.rb:147:in @require'

vendor/rails/railties/lib/commands/server.rb:30

script/server:3

Any idea what's wrong here? Thanks! Where can I find the latest version of this theme?