I am writing a custom wrapper for open_flash_chart plugin. It\'s placed in /lib and load it as a module in ApplicationController.
In Rails 3 /lib modules are not loaded automatically.
This is because the line:
# config.autoload_paths += %W(#{config.root}/extras)
inside config/application.rb is commented.
You can try to uncomment this line or, (it worked even better for me), leave this commented (for future reference) and add this two lines:
config.autoload_paths += %W(#{config.root}/lib)
config.autoload_paths += Dir["#{config.root}/lib/**/"]