I\'ve just done a fresh install and was able to access the default rails page at localhost:3000, but when I installed the activeadmin gem I had a problem when accessing /admin/
Adding the jquery-ui-rails gem will also give you jquery.ui support.
gem 'jquery-ui-rails'
In your application.js and application.css files, you can add all modules
jquery.ui.all
or only the ones you need, e.g.:
jquery.ui.slider