in Gemfile：组（:p生产） 做 宝石 'newrelic_rpm'， '~> 3.0.0'结束
令人恼火的是尝试在控制台中加载失败。 有什么提示吗？
# RAILS_ENV=production rails c
/u/apps/new/releases/2011/vendor/plugins/rpm/lib/new_relic/control/frameworks/rails.rb:33:in `install_episodes': undefined method `episodes_enabled?' for #<NewRelic::Control::Frameworks::Rails3:0xa16d3e8> (NoMethodError)
from /u/apps/new/releases/2011/vendor/plugins/rpm/lib/new_relic/control/frameworks/rails.rb:28:in `init_config'
from /u/apps/new/releases/2011/vendor/bundle/ruby/1.8/gems/newrelic_rpm-3.0.0/lib/new_relic/control/instance_methods.rb:60:in `init_plugin'
from /u/apps/new/releases/2011/vendor/bundle/ruby/1.8/gems/newrelic_rpm-3.0.0/lib/newrelic_rpm.rb:36
from /u/apps/new/releases/2011/vendor/bundle/ruby/1.8/gems/railties-3.0.5/lib/rails/initializable.rb:25:in `instance_exec'
from /u/apps/new/releases/2011/vendor/bundle/ruby/1.8/gems/railties-3.0.5/lib/rails/initializable.rb:25:in `run'
from /u/apps/new/releases/2011/vendor/bundle/ruby/1.8/gems/railties-3.0.5/lib/rails/initializable.rb:50:in `run_initializers'
from /u/apps/new/releases/2011/vendor/bundle/ruby/1.8/gems/railties-3.0.5/lib/rails/initializable.rb:49:in `each'
from /u/apps/new/releases/2011/vendor/bundle/ruby/1.8/gems/railties-3.0.5/lib/rails/initializable.rb:49:in `run_initializers'
from /u/apps/new/releases/2011/vendor/bundle/ruby/1.8/gems/railties-3.0.5/lib/rails/application.rb:134:in `initialize!'
from /u/apps/new/releases/2011/vendor/bundle/ruby/1.8/gems/railties-3.0.5/lib/rails/application.rb:77:in `send'
from /u/apps/new/releases/2011/vendor/bundle/ruby/1.8/gems/railties-3.0.5/lib/rails/application.rb:77:in `method_missing'
from /u/apps/new/releases/2011/config/environment.rb:5
看来您在供应商/插件中安装了new_relic gem 和new_relic插件。
我们使用new_relic，但只使用 gem（而不是插件）。 我会检查为什么你同时安装了插件和 gem。 插件可能很旧。
K