Today when I started my Ruby on Rails application I received this error.

> ruby script/server
ruby: no such file to load -- ubygems (LoadError)

After Googling for this error message I realized somehow my Ruby gems installation was corrupted. I had been planning on upgrading my Ruby from 1.85 to 1.86-26 so now seemed as a good time as ever. 🙂

Fortunately after installing the latest version of Ruby and updating to Ruby on Rails 1.2.6 everything seemed fine.