railstutorial/sample_app_rails_4 — pull request #24 by unchris (2014-03-17 18:56:41+00:00)
Title: specify sprockets 2.11.0

As of sprockets 2.12.0 there seems to be some incompatibility with *.scss files. Possibly an incompatibility with bootstrap-sass, or sass-rails, or maybe just the asset pipeline in general. It produces a stack dump instead of rendering the page when executing the stylesheet_link_tag function.

Locking sprockets down to 2.11.0 seems to fix it. I have tested this as of Chapter 4 of the book.