You live on the bleeding edge. You like to live dangerously.
You have everything working right with Rails 0.14.1. But some bugs that were fixed or features that were added mean that your app won’t work with 0.13.1 anymore.
Plus, you are on a shared host who is still using the ancient 0.13.1. You want to upgrade to the latest release candidate of Rails. How do you do it?
There are several ways, but here’s how I did it.
sudo gem update rails
This copies all the rails gems into ./vendor (and any other gems mentioned in environment.rb).