`method_missing': undefined method `i18n' for #<Rails::Railtie::Configuration:0x000001010fce98>

I have recently upgraqded to Ruby 1.9.2-rc1 and reinstalled rails 3
beta 4 with all the dependencies. I have run bundle install in my
rails project. Now I am trying to run some tests...

My test_helper.rb file looks like this:

# test_helper.rb
require 'rubygems'
require 'test/unit'
require 'rails/all'

$ gem list

i18n (0.4.1, 0.3.7)
activesupport (3.0.0.beta4, 3.0.0.beta3, 3.0.0.beta, 2.3.8)
rails (3.0.0.beta4)
railties (3.0.0.beta4)

$ bundle install

Using activesupport (3.0.0.beta4) from bundler gems
Using builder (2.1.2) from bundler gems
Using i18n (0.4.1) from bundler gems
...
Using railties (3.0.0.beta4) from bundler gems
Using rails (3.0.0.beta4) from bundler gems

$ rake test

/Users/kristianconsult/.rvm/gems/ruby-1.9.2-rc1/gems/
railties-3.0.0.beta4/lib/rails/railtie/configuration.rb:76:in
`method_missing': undefined method `i18n' for
#<Rails::Railtie::Configuration:0x000001010fce98> (NoMethodError)
  from /Users/kristianconsult/.rvm/gems/ruby-1.9.2-rc1/gems/
activesupport-3.0.0.beta/lib/active_support/railtie.rb:36:in
`<class:Railtie>'
  from /Users/kristianconsult/.rvm/gems/ruby-1.9.2-rc1/gems/
activesupport-3.0.0.beta/lib/active_support/railtie.rb:32:in
`<module:I18n>'
  from /Users/kristianconsult/.rvm/gems/ruby-1.9.2-rc1/gems/
activesupport-3.0.0.beta/lib/active_support/railtie.rb:31:in `<top
(required)>'
  from /Users/kristianconsult/.rvm/gems/ruby-1.9.2-rc1/gems/
railties-3.0.0.beta4/lib/rails.rb:13:in `require'
  from /Users/kristianconsult/.rvm/gems/ruby-1.9.2-rc1/gems/
railties-3.0.0.beta4/lib/rails.rb:13:in `<top (required)>'
  from /Users/kristianconsult/.rvm/gems/ruby-1.9.2-rc1/gems/
railties-3.0.0.beta4/lib/rails/all.rb:1:in `require'
  from /Users/kristianconsult/.rvm/gems/ruby-1.9.2-rc1/gems/
railties-3.0.0.beta4/lib/rails/all.rb:1:in `<top (required)>'
  from /Users/kristianconsult/Development/Languages/Ruby/Apps/Gems/
_forks/rails3-generators/test/test_helper.rb:3:in `require'
  from /Users/kristianconsult/Development/Languages/Ruby/Apps/Gems/
_forks/rails3-generators/test/test_helper.rb:3:in `<top (required)>'