title: Rails: You have already activated rake 10.3.1, but your Gemfile requires rake 10.2.2 (Gem::LoadError)
body: <p>Here is my error:</p>
  
  <pre><code>rake aborted!
  Gem::LoadError: You have already activated rake 10.3.1, but your Gemfile requires rake 10.2.2. Prepending `bundle exec` to your command may solve this.
  /Users/AaronWilliamson/.gem/ruby/2.1.0/gems/bundler-1.5.3/lib/bundler/runtime.rb:34:in `block in setup'
  /Users/AaronWilliamson/.gem/ruby/2.1.0/gems/bundler-1.5.3/lib/bundler/runtime.rb:19:in `setup'
  /Users/AaronWilliamson/.gem/ruby/2.1.0/gems/bundler-1.5.3/lib/bundler.rb:119:in `setup'
  /Users/AaronWilliamson/.gem/ruby/2.1.0/gems/bundler-1.5.3/lib/bundler/setup.rb:7:in `&lt;top (required)&gt;'
  /Users/AaronWilliamson/Desktop/Ripelist-Classifieds/config/boot.rb:4:in `&lt;top (required)&gt;'
  /Users/AaronWilliamson/Desktop/Ripelist-Classifieds/config/application.rb:1:in `&lt;top (required)&gt;'
  /Users/AaronWilliamson/Desktop/Ripelist-Classifieds/Rakefile:4:in `&lt;top (required)&gt;'
  LoadError: cannot load such file -- bundler/setup
  /Users/AaronWilliamson/Desktop/Ripelist-Classifieds/config/boot.rb:4:in `&lt;top (required)&gt;'
  /Users/AaronWilliamson/Desktop/Ripelist-Classifieds/config/application.rb:1:in `&lt;top (required)&gt;'
  /Users/AaronWilliamson/Desktop/Ripelist-Classifieds/Rakefile:4:in `&lt;top (required)&gt;'
  (See full trace by running task with --trace)
  </code></pre>
  
  <p>I can't run any rake tasks and this seems to be the root of all my other problems. It wasn't like this a couple days ago when I was running rake commands. Can anyone explain what's going on here and how to get my app back on track? I've hit a wall. Also, <code>bundle exec</code> doesn't fix the root of the problem for me. I never had to do that in the past and it's still not working now.</p>