From: Matma Rex Date: 2013-01-03T01:53:39+09:00 Subject: Re: Run time error with multiple version of gems installed I'd have to see some of your code, but you probably have to add `gem 'rake', '0.9.2.2'` before `require 'rake'` somewhere. Otherwise Rubygems will assume you want the newest version available. -- Matma Rex