title: style option breaking paperclip
body: <p>In my gemfile i have <code>gem "paperclip", :git =&gt; "git://github.com/thoughtbot/paperclip.git"</code> 
  and <code>gem "cocaine", "~&gt; 0.5.1"</code> (Other questions that report cocaine broke paperclip have been fixed in this version)
  In my model <code>has_attached_file :photo , :styles =&gt; { :thumb =&gt; "32x32#" }</code>
  In my development.rb <code>Paperclip.options[:command_path] = "/user/local/bin"</code></p>
  
  <p>I get an <code>Photo Paperclip::Errors::NotIdentifiedByImageMagickError</code> error when I try and upload.</p>
  
  <p>If however I change my model to <code>has_attached_file :photo</code> removing the style attribute everything works fine. I need to be able to resize my images though, why is the style attribute breaking my uploads?</p>