Sprockets::ArgumentError at /
require_tree argument must be a directory
(in /Users/kristian/.rvm/gems/ruby-2.0.0-p247/bundler/gems/mad_chatter-ee18ab091e83/app/assets/javascripts/mad_chatter/application.js:19)
Thanks @kethomassen. I forgot that git does not track empty directories, so it was working for me locally because I manually created the directory. The problem should be fixed now.
Getting this on Rails 4 using Thin.