/usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/class_module.rb:173:in `aref_prefix': missing aref_prefix for RDoc::SingleClass (NotImplementedError)
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/class_module.rb:181:in `aref'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/generator/template/darkfish/class.rhtml:47:in `block in generate_class'
	from /usr/share/ruby/erb.rb:850:in `eval'
	from /usr/share/ruby/erb.rb:850:in `result'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/generator/darkfish.rb:724:in `template_result'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/generator/darkfish.rb:703:in `block in render_template'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/generator/darkfish.rb:698:in `open'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/generator/darkfish.rb:698:in `open'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/generator/darkfish.rb:698:in `render_template'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/generator/darkfish.rb:351:in `generate_class'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/generator/darkfish.rb:371:in `block in generate_class_files'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/generator/darkfish.rb:368:in `each'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/generator/darkfish.rb:368:in `generate_class_files'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/generator/darkfish.rb:245:in `generate'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/rubygems_hook.rb:137:in `block in document'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/rubygems_hook.rb:134:in `chdir'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/rubygems_hook.rb:134:in `document'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/rubygems_hook.rb:202:in `generate'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/rubygems_hook.rb:56:in `block in generation_hook'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/rubygems_hook.rb:55:in `each'
	from /usr/share/gems/gems/rdoc-4.1.1/lib/rdoc/rubygems_hook.rb:55:in `generation_hook'
	from /usr/local/share/ruby/site_ruby/rubygems/request_set.rb:188:in `call'
	from /usr/local/share/ruby/site_ruby/rubygems/request_set.rb:188:in `block in install'
	from /usr/local/share/ruby/site_ruby/rubygems/request_set.rb:187:in `each'
	from /usr/local/share/ruby/site_ruby/rubygems/request_set.rb:187:in `install'
	from /usr/local/share/ruby/site_ruby/rubygems/dependency_installer.rb:394:in `install'
	from /usr/local/share/ruby/site_ruby/rubygems/commands/update_command.rb:211:in `update_gem'
	from /usr/local/share/ruby/site_ruby/rubygems/commands/update_command.rb:223:in `block in update_gems'
	from /usr/local/share/ruby/site_ruby/rubygems/commands/update_command.rb:222:in `each'
	from /usr/local/share/ruby/site_ruby/rubygems/commands/update_command.rb:222:in `update_gems'
	from /usr/local/share/ruby/site_ruby/rubygems/commands/update_command.rb:98:in `execute'
	from /usr/local/share/ruby/site_ruby/rubygems/command.rb:307:in `invoke_with_build_args'
	from /usr/local/share/ruby/site_ruby/rubygems/command_manager.rb:168:in `process_args'
	from /usr/local/share/ruby/site_ruby/rubygems/command_manager.rb:138:in `run'
	from /usr/local/share/ruby/site_ruby/rubygems/gem_runner.rb:54:in `run'
	from /bin/gem:21:in `<main>'