twilight@server:/var/www/submission$ cap deploy:stage_nodb
/home/twilight/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require': no such file to load -- capistrano-helpers/preflight (LoadError)
	from /home/twilight/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/configuration/loading.rb:152:in `require'
	from ./config/deploy.rb:7:in `load'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/configuration/loading.rb:93:in `instance_eval'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/configuration/loading.rb:93:in `load'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/configuration/loading.rb:172:in `load_from_file'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/configuration/loading.rb:89:in `load'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/configuration/loading.rb:86:in `block in load'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/configuration/loading.rb:86:in `each'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/configuration/loading.rb:86:in `load'
	from Capfile:4:in `load'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/configuration/loading.rb:93:in `instance_eval'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/configuration/loading.rb:93:in `load'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/configuration/loading.rb:172:in `load_from_file'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/configuration/loading.rb:89:in `load'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/configuration/loading.rb:86:in `block in load'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/configuration/loading.rb:86:in `each'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/configuration/loading.rb:86:in `load'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/cli/execute.rb:65:in `block in load_recipes'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/cli/execute.rb:65:in `each'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/cli/execute.rb:65:in `load_recipes'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/cli/execute.rb:31:in `execute!'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/lib/capistrano/cli/execute.rb:14:in `execute'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/gems/capistrano-2.6.0/bin/cap:4:in `<top (required)>'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/bin/cap:19:in `load'
	from /home/twilight/.rvm/gems/ruby-1.9.2-p180@excellence/bin/cap:19:in `<main>'