ruby script/plugin discoverってやってみたら、 d:/path/to/ruby/lib/ruby/gems/1.8/gems/rails-1.1.4/lib/commands/plugin.rb:658:in `each': undefined method `[]' for nil:NilClass (NoMethodError) from (eval):3:in `__send__' from (eval):3:in `each' from /path/to/ruby/lib/ruby/gems/1.8/gems/rails-1.1.4/lib/commands/plugin.rb:658:in `scrape' from /path/to/ruby/lib/ruby/gems/1.8/gems/rails-1.1.4/lib/commands/plugin.