=== Configuration You should have something like this in config/initializers/hoptoad.rb. HoptoadNotifier.configure do |config| config.api_key = '1234567890abcdef' end (Please note that this configuration should be in a global configuration, and is *not* environment-specific. Hoptoad is smart enough to know what errors are caused by what environments, so your staging errors don't get mixed in with your production errors.) You can test that Hoptoad is working in your production environment by using this rake task (from RAILS_ROOT): rake hoptoad:test If everything is configured properly, that task will send a notice to Hoptoad which will be visible immediately. NOTE FOR RAILS 1.2.* USERS: You will need to copy the hoptoad_notifier_tasks.rake file into your RAILS_ROOT/lib/tasks directory in order for the rake hoptoad:test task to work.