title: Missing the Rails 2.3.4 gem. Even though it's installed!
body: <p>Running Snow Leopard. 
  Tried uninstalling, and re-installing.
  Still getting the same error whenever I run a rake task.</p>
  
  <blockquote>
    <p>mbpro:redmine shereef$ ruby -v<br>
    ruby 1.8.7 (2009-06-12 patchlevel
    174) [i686-darwin10.0.0]</p>
    
    <p>mbpro:redmine shereef$ rails -v<br>
    Rails 2.3.4</p>
    
    <p>mbpro:redmine shereef$ which rails<br>
    /usr/local/bin/rails</p>
    
    <p>mbpro:redmine shereef$ gem -v<br>
    1.3.5</p>
    
    <p>mbpro:redmine shereef$ which gem<br>
    /usr/local/bin/gem</p>
    
    <p>mbpro:redmine shereef$ rake -v<br>
    (in /Users/shereef/Documents/Code/BetterMeans/redmine)<br>
    Missing the Rails
    2.3.4 gem. Please <code>gem install -v=2.3.4 rails</code>, update your 
    RAILS_GEM_VERSION setting in config/environment.rb for the Rails
    version you do have  installed, or comment out RAILS_GEM_VERSION to
    use the latest version installed.</p>
    
    <p>mbpro:redmine shereef$ which rake<br>
    /usr/bin/rake</p>
    
    <p>mbpro:redmine shereef$ $PATH<br>
    -bash:
    /usr/local/bin:/usr/local/sbin:/usr/local/mysql/bin:/opt/local/bin:/opt/local/sbin:/opt/local/bin:/opt/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/git/bin:/usr/X11/bin:
    No such file or directory</p>
    
    <p>mbpro:redmine shereef$</p>
  </blockquote>