Error in generate controller after installing rfacebook replied by Tran Duc Minh @ Wed, 16 Jan 2008 15:41:25 -0000

I do step by step of the tutorial: http://rfacebook.wordpress.com/2007/12/28/quick…

When i generate controller like below command on step 6:

ruby script/generate controller workshop index debug

But it generates error like this:
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require’: no such file to load—rfacebook_on_rails/view_extensions (MissingSourceFile) from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require’ from c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in `require’ from c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:342:in `new_constants_in’ from c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:496:in `require’ from E:/Projects/Facebook/Resource/Funstatus/workspace/myrfacebook/vendor/plugins/rfacebook_on_rails/init.rb:33:in `evaluate_init_rb’ from c:/ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/rails/plugin.rb:79:in `evaluate_init_rb’ from c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings’ from c:/ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/rails/plugin.rb:75:in `evaluate_init_rb’ … 14 levels… from c:/ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/commands/generate.rb:1 from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:32:in `gem_original_require’ from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:32:in `require’ from script/generate:3

This error happens after i install rfacebook and install plugin to my application.
Does any one know this error?

Appreciate any help :)

Thanks,
Minh