由于我已将rails 3.0.0项目迁移到3.1.0，因此我已完成本教程http://railscasts.com/episodes/282-upgrading-to-rails-3-1中给出的所有更改，但不包括资产管道。一切都安装得很好，但是当我运行服务器时，我收到以下错误。
=> Booting WEBrick
=> Rails 3.1.0 application starting in development on http://0.0.0.0:1234
=> Call with -d to detach
=> Ctrl-C to shutdown server
Exiting
/home/vikas/.rvm/gems/ruby-1.9.3-p448/gems/activesupport-3.1.0/lib/active_support/core_ext/module/aliasing.rb:31:in `alias_method': undefined method `render' for module `ActionView::Rendering' (NameError)
from /home/vikas/.rvm/gems/ruby-1.9.3-p448/gems/activesupport-3.1.0/lib/active_support/core_ext/module/aliasing.rb:31:in `alias_method_chain'
from /home/vikas/Aptana Studio 3 Workspace/PARAS6/vendor/plugins/active_scaffold/lib/active_scaffold/extensions/action_view_rendering.rb:95:in `<module:Rendering>'
from /home/vikas/Aptana Studio 3 Workspace/PARAS6/vendor/plugins/active_scaffold/lib/active_scaffold/extensions/action_view_rendering.rb:17:in `<top (required)>'
请有人帮帮我，建议我应该做些什么改变。提前致谢