rBoard installation issue

After unzipping the rBoard, and running rake gems:install, I get the following error:

C:\Communit\rboard>rake gems:install --trace (in C:/Communit/rboard) DEPRECATION WARNING: Rake tasks in vendor/plugins/acts_as_snook/tasks are deprecated. Use lib/tasks instead. (called from C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/rails-2.3.8/lib/ tasks/rails.rb:10) ** Invoke gems:install (first_time) ** Invoke gems:base (first_time) ** Execute gems:base ** Invoke environment (first_time) ** Execute environment rake aborted! uninitialized constant Sass::Plugin C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependenci es.rb:440:in load_missing_constant' C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependenci es.rb:80:inconst_missing' C:/Communit/rboard/config/environment.rb:86 C:/Tools/Ruby187/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in gem_original_re quire' C:/Tools/Ruby187/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in require' C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependenci es.rb:156:in require' C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependenci es.rb:521:innew_constants_in' C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/activesupport-2.3.8/lib/active_support/dependenci es.rb:156:in require' C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/rails-2.3.8/lib/tasks/misc.rake:4 C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in call' C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in execute' C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in each' C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in execute' C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:597:in invoke_with_call_c hain' C:/Tools/Ruby187/lib/ruby/1.8/monitor.rb:242:in synchronize' C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:in invoke_with_call_c hain' C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/rak开发者_StackOverflow中文版e-0.8.7/lib/rake.rb:583:in invoke' C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/rails-2.3.8/lib/tasks/gems.rake:17 C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in call' C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in execute' C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in each' C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in execute' C:/Tools/Ruby187/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:597:in invoke_with_call_c

Any idea what might be the problem?

Sass::Plugin is provided by the Haml gem. Install this gem and try the rake task again.