Atualizando para o Rails 2.3.2

app/views/events/new.html.haml

@@ -2,6 +2,6 @@
 %h1.title Adicionar evento
 
 %p
-  - form_tag course_event_url(@course, @event), :method => :post do
+  - form_tag course_events_url(@course), :method => :post do
     = render :partial => 'form'
     = submit_tag "Adicionar"

app/views/events/show.html.haml

@@ -1,2 +1,2 @@
 - @events = @course.events
-= render 'events/index'
+= render :file => 'events/index'