constant uninitialized RAILS_ROOT

[cblair]

New to rails, but I can't find for the life of me how to patch this. I've tried editing the vendor/pluging/stuffing file with this, but no change.

Exact error is:

ActionController::RoutingError (uninitialized constant Stuffing::StuffingMethod::RAILS_ROOT): app/models/post.rb:2:in <class:Post>' app/models/post.rb:1:in<top (required)>' app/controllers/posts_controller.rb:1:in `<top (required)>'

Rails 3, which may be different than what this was dev'ed on.