Rails 4.2.x and twitter-bootstrap-rails

If you’re running into this error when attempting to install twitter-bootstrap-rails on Rails 4.2.x:

undefined method `register_preprocessor’

Note that there is currently a bug between less-rails and the 3.x version of sprockets-rails. To resolve this issue, update your gemfile with:

gem 'sprockets-rails', '<=2.3.3'

And then

bundle update sprockets-rails

After which, you should be good to go.

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