Upgrading to rails 2.0

Hi,

   I'm trying to upgrade my application from rails 1.2.6 to rails 2.0. After upgrading I tried to launch webrick and I got the following error. Does anyone have any thoughts on how to proceed? I can't find anything on the web.

    Janak

c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/ dependencies.rb:263:in `load_missing_constant': uninitialized constant ActionView::TemplateFinder (NameError)   from c:/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/ active_support/dependencies.rb:453:in `const_missing'   from c:/ruby/lib/ruby/gems/1.8/gems/actionmailer-2.0.2/lib/ action_mailer/base.rb:399:in `template_root='   from c:/ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/initializer.rb: 283:in `initialize_framework_views'   from c:/ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/initializer.rb: 97:in `process'   from c:/ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/initializer.rb: 49:in `send'   from c:/ruby/lib/ruby/gems/1.8/gems/rails-2.0.2/lib/initializer.rb: 49:in `run'   from C:/Documents and Settings/Janak/My Documents/Aptana Studio/ kahoots/config/environment.rb:13   from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require'    ... 12 levels...   from c:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require'   from ./script/server:3   from -e:2:in `load'   from -e:2

What do you have here:

from C:/Documents and Settings/Janak/My Documents/Aptana Studio/ kahoots/config/environment.rb:13