twitter bootstrap drop down suddenly not working

i was wondering if someone could help me. my bootstrap drop down menu suddenly stopped working. i have no idea why. it was working before. i didn't touch my views my layouts views so i think the problem is not there. im pretty sure it has to do with my javascript but i dont know where its coming from. my gem file is... ``` gem 'rails', '3.2.3' gem 'bootstrap-sass', '2.0.1' gem 'bcrypt-ruby', '3.0.1' gem 'faker', '1.0.1' gem 'will_paginate', '3.0.3' gem 'bootstrap-will_paginate', '0.0.5' gem 'devise' gem 'carrierwave' gem 'rmagick' gem 'delayed_job_active_record' gem 'daemons' gem 'make_voteable' gem 'admin_data' gem 'indextank' ``` and my application.js is... ``` //= require jquery //= require jquery-ui //= require jquery_ujs //= require bootstrap-dropdown //= require bootstrap //= require_tree . ``` im guessing maybe it has to do with my config files somehow?