From: Roger Pack Date: 2011-02-26T05:22:03+09:00 Subject: Re: Need Your Help: RubyGems' Gem Activation is Changing I'm a bit confused here. Does the following mean that actionpack-2.3.5 requires rack ~> 1.0.0 and thin requires 1.2.1? Are those mutually compatible? -r Exception `Gem::LoadError' at /Library/Ruby/Site/1.8/rubygems.rb:274 - can't activate rack (~> 1.0.0, runtime) for ["actionpack-2.3.5", "rails-2.3.5"], already activated rack-1.2.1 for ["thin-1.2.5"] Missing the Rails 2.3.5 gem. -- Posted via http://www.ruby-forum.com/.