DevKit Missing

The first time I installed RoR, I used EngineYard’s wonderful RailsInstaller (, but for my upgrade, I wanted to go to 1.9.2, but they only had packages with 1.8.7 and 1.9.3.  So instead, I just downloaded 1.9.2 and installed it.

One thing I was missing with the DevKit (which I found out through an error message when I was installing my gems again).  So I installed it from and then followed the directions on  In the config.yml file generated, I just had to add where my new Ruby installation was (C:/Ruby192).


Most people who are not on Windows use RVM to manage their Ruby versions, but RVM doesn’t work for Windows.  Instead there’s a great tool called Pik that does the thing.  Pik allows you to switch between different Ruby versions you have on your PC.  I needed this once I went to 1.9.2.

The Github page for Pik is here:

The Github page didn’t include a lot of details though.  For more detailed instructions, I found this wonderful tutorial by Ben Hall: