Here is the new error message I am getting when doing rails s....
Exiting C:/Sites/ThinkBlog/crumblr/config/initializers/devise.rb:235:in
block in <top (required)>': undefined method[]' for nil:NilClass (NoMethodError) from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/devise-3.3.0/lib/devise.rb:292:insetup' from C:/Sites/ThinkBlog/crumblr/config/initializers/devise.rb:3:in<top (required)>' from C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/activesupport-4.1.4/lib/active_support/dependencies.rb:241:in `load'
By the way line 235 in device.rb is ,
config.omniauth :facebook, FACEBOOK_CONFIG['facebook_api_key'], FACEBOOK_CONFIG['facebook_api_secret']