constant ActionView::Base::Subclasses::MainController not defined

Greg,

I checked-out the latest from github. Anyway, I've found the problem.
There's still unfinished code in actionview. I'll live with that for
the time being.

Regards,

That's what I was thinking you might say. You will probably get more
responses to your questions on lighthouse where the core Rails team
handles issues. Most of the peeps on this list are just users, ones
probably not using Rails 3 yet.

https://rails.lighthouseapp.com/projects/8994-ruby-on-rails/overview