ERROR: Action Controller:Exception caught when installing bootstrap / custom.css.scss
===

Im stuck... im going through Hartls RoR tutorial and somehow i cant get rid of a bug. All went well until the end of section 5.1.1. When i installed bootstrap and set up the custom.css.scss

ill just put here what i think u might need to answer my question. dunno any further, hope u can help me out with this one...

this is what it throws when i testrun it on localhost



    ActiveRecord::ConnectionNotEstablished
    
    ActiveRecord::ConnectionNotEstablished
    
    Rails.root: C:/Ruby193/bin/rails_projects/sample_app
    Application Trace | Framework Trace | Full Trace
    
    activerecord (3.1.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:409:in `retrieve_connection'
    activerecord (3.1.1) lib/active_record/connection_adapters/abstract/connection_specification.rb:107:in `retrieve_connection'
    activerecord (3.1.1) lib/active_record/connection_adapters/abstract/connection_specification.rb:89:in `connection'
    activerecord (3.1.1) lib/active_record/query_cache.rb:65:in `rescue in call'
    activerecord (3.1.1) lib/active_record/query_cache.rb:59:in `call'
    activerecord (3.1.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:477:in `call'
    actionpack (3.1.1) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
    activesupport (3.1.1) lib/active_support/callbacks.rb:392:in `_run_call_callbacks'
    activesupport (3.1.1) lib/active_support/callbacks.rb:81:in `run_callbacks'
    actionpack (3.1.1) lib/action_dispatch/middleware/callbacks.rb:28:in `call'
    actionpack (3.1.1) lib/action_dispatch/middleware/reloader.rb:68:in `call'
    rack (1.3.6) lib/rack/sendfile.rb:101:in `call'
    actionpack (3.1.1) lib/action_dispatch/middleware/remote_ip.rb:48:in `call'
    actionpack (3.1.1) lib/action_dispatch/middleware/show_exceptions.rb:47:in `call'
    railties (3.1.1) lib/rails/rack/logger.rb:13:in `call'
    rack (1.3.6) lib/rack/methodoverride.rb:24:in `call'
    rack (1.3.6) lib/rack/runtime.rb:17:in `call'
    activesupport (3.1.1) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
    rack (1.3.6) lib/rack/lock.rb:15:in `call'
    actionpack (3.1.1) lib/action_dispatch/middleware/static.rb:53:in `call'
    railties (3.1.1) lib/rails/engine.rb:456:in `call'
    railties (3.1.1) lib/rails/rack/content_length.rb:16:in `call'
    railties (3.1.1) lib/rails/rack/log_tailer.rb:14:in `call'
    rack (1.3.6) lib/rack/handler/webrick.rb:59:in `service'
    C:/Ruby193/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
    C:/Ruby193/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
    C:/Ruby193/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'
    
    Request
    
    Parameters:
    
    None
    
    Show session dump
    
    Show env dump
    
    GATEWAY_INTERFACE: "CGI/1.1"
    HTTP_ACCEPT: "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8"
    HTTP_ACCEPT_ENCODING: "gzip, deflate"
    HTTP_ACCEPT_LANGUAGE: "de-de,de;q=0.8,en-us;q=0.5,en;q=0.3"
    REMOTE_ADDR: "127.0.0.1"
    REMOTE_HOST: XXXXXXXXXXXXX
    SERVER_NAME: "localhost"
    SERVER_PROTOCOL: "HTTP/1.1"
    
    Response
    
    Headers:
    
    None


...

This is my gemfile:

    source 'https://rubygems.org'
    
    gem 'rails', '3.2.6'
    
    # Bundle edge Rails instead:
    # gem 'rails', :git => 'git://github.com/rails/rails.git'
    
    gem 'sqlite3'
    
    
    # Gems used only for assets and not required
    # in production environments by default.
    group :assets do
      gem 'sass-rails',   '~> 3.2.3'
      gem 'coffee-rails', '~> 3.2.1'
    
      # See https://github.com/sstephenson/execjs#readme for more supported runtimes
      # gem 'therubyracer', :platforms => :ruby
    
      gem 'uglifier', '>= 1.0.3'
    end
    
    gem 'jquery-rails'
    
    # To use ActiveModel has_secure_password
    # gem 'bcrypt-ruby', '~> 3.0.0'
    
    # To use Jbuilder templates for JSON
    # gem 'jbuilder'
    
    # Use unicorn as the app server
    # gem 'unicorn'
    
    # Deploy with Capistrano
    # gem 'capistrano'
    
    # To use debugger
    # gem 'debugger'


I i tried other gem files, for example this one, also wouldnt work (though it worked in a different question here answered):

    source 'http://rubygems.org'
    
    gem 'rails', '3.1.1'
    
    gem 'sqlite3'
    
    group :development do
      gem 'rspec-rails', '2.6.1'
    end
    
    
    group :test do
      gem 'rspec-rails', '2.6.1'
      gem 'webrat', '0.7.1'
    end
    
    group :assets do
      gem 'sass-rails',   '~> 3.1.4'
      gem 'coffee-rails', '~> 3.1.1'
      gem 'uglifier', '>= 1.0.3'
    end
    
    gem 'jquery-rails'

