title: rake assets:precompile undefined method `[]' for nil:NilClass
body: <p>I'm trying to get a new production server up and running and it is so close. When I execute</p>
  
  <pre><code>RAILS_ENV=production rake assets:precompile
  </code></pre>
  
  <p>This error is returned</p>
  
  <pre><code>undefined method `[]' for nil:NilClass
  </code></pre>
  
  <p>When I run it with a --trace, this is retuned</p>
  
  <pre><code>$RAILS_ENV=production rake assets:precompile --trace
  ** Invoke assets:precompile (first_time)
  ** Execute assets:precompile
  rake aborted!
  undefined method `[]' for nil:NilClass
    (in /home/deploy/pm/app/assets/stylesheets/jquery-ui-1.8.16.custom.css.scss)
  
  Tasks: TOP =&gt; assets:precompile
  (See full trace by running task with --trace)
  </code></pre>
  
  <p>I appreciated any help anyone can offer, ideas, etc.</p>
  
  <p>Here is the Gemfile and bundle list</p>
  
  <pre><code>source 'http://rubygems.org'
  
  gem 'cancan'
  gem 'client_side_validations'
  gem 'devise', '~&gt; 1.5.3'
  gem 'execjs'
  gem 'haml'
  gem 'httparty'
  gem 'jquery-rails'
  gem 'mysql2'
  gem 'paperclip', "~&gt; 2.4"
  gem 'rails', '3.1.0'
  gem 'rails3-jquery-autocomplete'
  gem 'rake', '0.9.2'
  gem 'remotipart', "~&gt; 1.0"
  gem 'simple_datatables'
  gem 'therubyracer'
  gem 'validates_timeliness', '~&gt; 3.0.2'
  gem 'will_paginate', '~&gt; 3.0'
  
  gem 'geocoder', '~&gt; 1.1.2'
  
  #temp for pm.onlinetherapy.com
  gem 'faker'
  
  group :test do
      gem 'capybara'
      gem 'cucumber-rails', :require =&gt; false
      gem 'database_cleaner'
      gem 'factory_girl_rails'
      gem 'faker'
      gem 'guard-rspec'
      gem 'selenium-webdriver', '2.7.0'
      gem 'webrat'
  end
  group :development, :test do
      gem 'faker'
      gem 'haml-rails'
      gem 'hpricot'
      gem 'rspec-rails'
      gem 'ruby_parser'
      gem 'web-app-theme', '~&gt; 0.8.0'
  end
  
  
  # Gems used only for assets and not required
  # in production environments by default.
  group :assets do
      gem 'sprockets'
      gem 'sass', '3.1.20'
      gem 'sass-rails', '3.1.4' # downgraded to 3.1.4 to avoid a stack overflow error in rake assets:precompile
      gem 'coffee-rails', "~&gt; 3.1.0"
      gem 'uglifier'
  end
  
  # Use unicorn as the web server
  # gem 'unicorn'
  
  # Deploy with Capistrano
  # gem 'capistrano'
  
  # To use debugger
  # bundle install has a problem installing linecache19, a dependency of ruby-debug19
  # try 'sudo gem install linecache19' to fix the problem, and then do bundle install again 
  gem 'ruby-debug19', :require =&gt; 'ruby-debug'
  </code></pre>
  
  <p>And the <code>bundle list</code> gives</p>
  
  <pre><code>Gems included by the bundle:
    * actionmailer (3.1.0)
    * actionpack (3.1.0)
    * activemodel (3.1.0)
    * activerecord (3.1.0)
    * activeresource (3.1.0)
    * activesupport (3.1.0)
    * archive-tar-minitar (0.5.2)
    * arel (2.2.3)
    * bcrypt-ruby (3.0.1)
    * builder (3.0.2)
    * bundler (1.2.0)
    * cancan (1.6.8)
    * capybara (1.1.2)
    * childprocess (0.3.5)
    * client_side_validations (3.1.4)
    * cocaine (0.3.0)
    * coffee-rails (3.1.1)
    * coffee-script (2.2.0)
    * coffee-script-source (1.3.3)
    * columnize (0.3.6)
    * cucumber (1.2.1)
    * cucumber-rails (1.3.0)
    * database_cleaner (0.8.0)
    * devise (1.5.3)
    * diff-lcs (1.1.3)
    * erubis (2.7.0)
    * execjs (1.4.0)
    * factory_girl (4.0.0)
    * factory_girl_rails (4.0.0)
    * faker (1.0.1)
    * ffi (1.1.5)
    * geocoder (1.1.3)
    * gherkin (2.11.2)
    * guard (1.3.2)
    * guard-rspec (1.2.1)
    * haml (3.1.7)
    * haml-rails (0.3.4)
    * hike (1.2.1)
    * hpricot (0.8.6)
    * httparty (0.8.3)
    * i18n (0.6.1)
    * jquery-rails (2.1.2)
    * json (1.7.5)
    * json_pure (1.7.5)
    * jsonify (0.3.1)
    * jsonify-rails (0.3.2)
    * libv8 (3.3.10.4)
    * linecache19 (0.5.12)
    * listen (0.5.0)
    * mail (2.3.3)
    * meta_search (1.1.3)
    * mime-types (1.19)
    * multi_json (1.3.6)
    * multi_xml (0.5.1)
    * mysql2 (0.3.11)
    * nokogiri (1.5.5)
    * orm_adapter (0.0.7)
    * paperclip (2.7.0)
    * polyamorous (0.5.0)
    * polyglot (0.3.3)
    * rack (1.3.6)
    * rack-cache (1.0.3)
    * rack-mount (0.8.3)
    * rack-ssl (1.3.2)
    * rack-test (0.6.1)
    * rails (3.1.0)
    * rails3-jquery-autocomplete (1.0.9)
    * railties (3.1.0)
    * rake (0.9.2)
    * rdoc (3.12)
    * remotipart (1.0.2)
    * rspec (2.11.0)
    * rspec-core (2.11.1)
    * rspec-expectations (2.11.3)
    * rspec-mocks (2.11.2)
    * rspec-rails (2.11.0)
    * ruby-debug-base19 (0.11.25)
    * ruby-debug19 (0.11.6)
    * ruby_core_source (0.1.5)
    * ruby_parser (2.3.1)
    * rubyzip (0.9.9)
    * sass (3.1.20)
    * sass-rails (3.1.4)
    * selenium-webdriver (2.7.0)
    * sexp_processor (3.2.0)
    * simple_datatables (0.2.1)
    * sprockets (2.0.4)
    * therubyracer (0.10.2)
    * thor (0.14.6)
    * tilt (1.3.3)
    * timeliness (0.3.6)
    * treetop (1.4.10)
    * tzinfo (0.3.33)
    * uglifier (1.3.0)
    * validates_timeliness (3.0.14)
    * warden (1.2.1)
    * web-app-theme (0.8.0)
    * webrat (0.7.3)
    * will_paginate (3.0.3)
    * xpath (0.1.4)
  </code></pre>