title: GitHub Pages: "bundle exec jekyll serve" freezes on "Generating..."
body: <p>I am using GitHub Pages Jekyll with the bootstrap theme, "Feeling Responsive." My issue is that the jekyll bundler freezes in the middle of generating.</p>
  
  <p>To develop the jekyll site locally, I run "bundle exec jekyll serve" instead of "jekyll serve" because I get this error, </p>
  
  <pre><code>J-MacBook-Pro:&lt;user&gt;.github.io jimbo$ jekyll serve
  /Library/Ruby/Gems/2.0.0/gems/bundler-1.13.3/lib/bundler/runtime.rb:40:in     
  `block in setup': You have already activated colorator 1.1.0, but your Gemfile     
  requires colorator 0.1. Prepending `bundle exec` to your command may solve 
  this. (Gem::LoadError)
  </code></pre>
  
  <p>All was working well until one day I ran, "bundle exec jekyll serve", as usual, and it froze. Now, every time I run the command, it freezes.</p>
  
  <p>What I have tried so far: </p>
  
  <ol>
  <li>git reset to a previous commit when all was working well.</li>
  <li>restart terminal and editor.</li>
  <li>restart mac.</li>
  </ol>
  
  <p>So far, nothing works and this is what I see whenever I run the build:</p>
  
  <pre><code>J-MacBook-Pro:&lt;user&gt;.github.io jimbo$ bundle exec jekyll serve
  Configuration file:    
  /Users/jimbo/Dropbox/Github/&lt;user&gt;.github.io/_config.yml
     Source: /Users/jimbot/Dropbox/Github/&lt;user&gt;.github.io
     Destination: /Users/jimbo/Dropbox/Github/&lt;user&gt;.github.io/_site
   Incremental build: disabled. Enable with --incremental
    Generating...
  </code></pre>
  
  <p>It would be awesome if someone could point me in the right direction here. Mainly, why would generating freeze in this fashion and what can I do to fix it?</p>
  
  <p>Thank you very much.</p>