title: no such file to load -- bcrypt_ext (via devise)
body: <p>I'm using database authentication in devise(current gem) on rails 3 and I get the following error when trying to log in with username/password.</p>
  
  <pre><code>no such file to load -- bcrypt_ext 
  
  This error occurred while loading the following files:
     bcrypt
     bcrypt_ext
  </code></pre>
  
  <p>I have previously "Successfully installed bcrypt-ruby-2.1.2" gem.</p>
  
  <p>Any ideas? I also tried giving bundler the git repo address and fetching the master, but it doesn't solve the issue.</p>