rails 3.2 rails generate rspec:install… undefined method `delegate_template_exists?' for class `ActionView::Base' (NameError)

Question

Got this error trying to do a new project with rails 3.2. haml issue ?

rails generate rspec:install
/home/me/.rvm/gems/ruby-1.9.2-p290/gems/haml-3.1.3/lib/haml/template/patch.rb:16:  
in `alias_method': undefined method `delegate_template_exists?'  
for class `ActionView::Base' (NameError)