Rails3 active support not loading required dependencies?

Hi All,

I’m playing with readability gem. I can use it on irb but failed on
Rails3
app. Here’s the output http://pastie.org/private/1zuyaurnbkmq7u6raqkdhg

I believe it’s not a javascript error. Judging by the active support
error,
it failed loading the dependencies, I suspect that Rails has failed to
load
the required gems that readability use (like harmony, johnson and envjs)
to
handle javascript and DOM in Ruby.

I have all required gems installed and have this line on
config/application.rb

Bundler.require(:default, Rails.env) if defined?(Bundler)

Any suggestion on what should I check?

Thanks,
Adinda