Bundle exec spork error need help

Using RSpec, Rails
Preloading Rails environment
undefined method generators' for #<Rails::Railtie::Configuration:0x0000000339a898> (NoMethodError) /home/rorway/.rvm/gems/ruby-2.1.2/gems/railties-4.1.1/lib/rails/railtie/configuration.rb:95:inmethod_missing’
/home/rorway/.rvm/gems/ruby-2.1.2/gems/rspec-rails-2.0.0.beta.18/lib/rspec-rails.rb:4:in
<class:Railtie>' /home/rorway/.rvm/gems/ruby-2.1.2/gems/rspec-rails-2.0.0.beta.18/lib/rspec-rails.rb:3:inmodule:Rails
/home/rorway/.rvm/gems/ruby-2.1.2/gems/rspec-rails-2.0.0.beta.18/lib/rspec-rails.rb:2:in
<module:RSpec>' /home/rorway/.rvm/gems/ruby-2.1.2/gems/rspec-rails-2.0.0.beta.18/lib/rspec-rails.rb:1:in<top (required)>’
/home/rorway/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:76:in
require' /home/rorway/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:76:inblock (2 levels) in require’
/home/rorway/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:72:in
each' /home/rorway/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:72:inblock in require’
/home/rorway/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:61:in
each' /home/rorway/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:61:inrequire’
/home/rorway/.rvm/gems/ruby-2.1.2@global/gems/bundler-1.6.2/lib/bundler.rb:132:in
require' /home/rorway/sample_app/config/application.rb:14:in<top (required)>’
/home/rorway/.rvm/gems/ruby-2.1.2/gems/spork-rails-4.0.0/lib/spork/app_framework/rails.rb:49:in
require' /home/rorway/.rvm/gems/ruby-2.1.2/gems/spork-rails-4.0.0/lib/spork/app_framework/rails.rb:49:inpreload_rails’
/home/rorway/.rvm/gems/ruby-2.1.2/gems/spork-rails-4.0.0/lib/spork/app_framework/rails.rb:7:in
preload' /home/rorway/.rvm/gems/ruby-2.1.2/gems/spork-1.0.0rc4/lib/spork/test_framework.rb:134:inblock in preload’
/home/rorway/.rvm/gems/ruby-2.1.2/gems/spork-1.0.0rc4/lib/spork.rb:62:in
exec_prefork' /home/rorway/.rvm/gems/ruby-2.1.2/gems/spork-1.0.0rc4/lib/spork/test_framework.rb:120:inpreload’
/home/rorway/.rvm/gems/ruby-2.1.2/gems/spork-1.0.0rc4/lib/spork/run_strategy/forking.rb:25:in
preload' /home/rorway/.rvm/gems/ruby-2.1.2/gems/spork-1.0.0rc4/lib/spork/runner.rb:75:inrun’
/home/rorway/.rvm/gems/ruby-2.1.2/gems/spork-1.0.0rc4/lib/spork/runner.rb:10:in
run' /home/rorway/.rvm/gems/ruby-2.1.2/gems/spork-1.0.0rc4/bin/spork:10:in<top
(required)>’
/home/rorway/.rvm/gems/ruby-2.1.2/bin/spork:23:in load' /home/rorway/.rvm/gems/ruby-2.1.2/bin/spork:23:in
/home/rorway/.rvm/gems/ruby-2.1.2/bin/ruby_executable_hooks:15:in eval' /home/rorway/.rvm/gems/ruby-2.1.2/bin/ruby_executable_hooks:15:in