be careful with nested namespace'd controllers in our sample plugin

extra/sample_plugin/app/models/meeting.rb

@@ -18,6 +18,6 @@ class Meeting < ActiveRecord::Base
   acts_as_journalized :event_title => Proc.new {|o| "#{o.scheduled_on} Meeting"},
                 :event_datetime => :scheduled_on,
                 :event_author => nil,
-                :event_url => Proc.new {|o| {:controller => 'meetings', :action => 'show', :id => o.id}}
+                :event_url => Proc.new {|o| {:controller => '/meetings', :action => 'show', :id => o.id}}
                 :activity_timestamp => 'scheduled_on'
 end

extra/sample_plugin/init.rb

@@ -37,7 +37,7 @@ Redmine::Plugin.register :sample_plugin do
   end
 
   # A new item is added to the project menu
-  menu :project_menu, :sample_plugin, { :controller => 'example', :action => 'say_hello' }, :caption => 'Sample'
+  menu :project_menu, :sample_plugin, { :controller => '/example', :action => 'say_hello' }, :caption => 'Sample'
 
   # Meetings are added to the activity view
   activity_provider :meetings