Active Admin和Sass Error

/usr/local/rvm/gems/ruby-1.9.3-p194/gems/activeadmin 0.5.0/lib/active_admin/application.rb:283:in `generate_stylesheets': uninitialized constant Sass::Plugin (NameError) 
from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/activeadmin-0.5.0/lib/active_admin/application.rb:105:in `prepare!' 
    from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/activeadmin-0.5.0/lib/active_admin.rb:72:in `setup' 
    from /Users/devinross/Desktop/music-server1/config/initializers/active_admin.rb:1:in `<top (required)>' 
    from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/engine.rb:588:in `block (2 levels) in <class:Engine>' 
    from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/engine.rb:587:in `each' 
    from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/engine.rb:587:in `block in <class:Engine>' 
    from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/initializable.rb:30:in `instance_exec' 
    from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/initializable.rb:30:in `run' 
    from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/initializable.rb:55:in `block in run_initializers' 
    from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/initializable.rb:54:in `each' 
    from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/initializable.rb:54:in `run_initializers' 
    from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/application.rb:136:in `initialize!' 
    from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/railtie/configurable.rb:30:in `method_missing' 
    from /Users/devinross/Desktop/music-server1/config/environment.rb:5:in `<top (required)>' 
    from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/application.rb:103:in `require_environment!' 
    from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/railties-3.2.8/lib/rails/commands.rb:25:in `<top (required)>' 
    from script/rails:6:in `require' 
    from script/rails:6:in `<main>'

有沒有人知道如何解決這個問題？Active Admin和Sass Error

gem 'rails', '~> 3.2.8' 

group :assets do 
    gem 'sass-rails', '~> 3.2.3' 
    gem 'coffee-rails', '~> 3.2.1' 
    gem 'uglifier',  '>= 1.0.3' 
    gem 'yui-compressor' 
end 


gem 'nokogiri' 

# infrastructure 
gem 'rake', require: false 
gem 'pg' 
gem 'dalli' 

# web server 
# gem 'thin' # for evented server 
# gem 'goliath' # for evented server 
gem 'puma' # for multi-threaded server 
# gem 'unicorn' # for multi-processor server 

# queue 
gem 'sidekiq' 
gem 'slim' 
gem 'sinatra', :require => nil 

# support 
gem 'newrelic_rpm' 
gem 'airbrake' 
gem 'heroku'

來源

2012-09-07 devinross

可能這個答案會幫助 - http://stackoverflow.com/questions/6006360/how-to-make-rails-3-1-use-sass-over-scss-as-the-默認 – mguymon

添加'config.sass.preferre d_syntax =：sass'似乎沒有幫助。 – devinross