Hello there guys,
i'm facing a strange problem using Observers with Rails 2.3.5.

1) I generated a new observer using builtin generator
2) I added observer into environment.rb (config.active_record.observers = [:project])

Observer content
class ProjectObserver < ActiveRecord::Observer
def after_create(project)

#

end end

Rails 2.3.5 crashes at startup, with following message
=> Booting Mongrel => Rails 2.3.5 application starting on http://0.0.0.0:3000 /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/base.rb:1959:in method_missing': undefined methodinstance' for #<Class:0x1034416d8> (NoMethodError)

from /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/observer.rb:38:in `instantiate_observers'
from /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/observer.rb:36:in `each'
from /Library/Ruby/Gems/1.8/gems/activerecord-2.3.5/lib/active_record/observer.rb:36:in `instantiate_observers'
from /Library/Ruby/Gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:15:in `define_dispatcher_callbacks'
from /Library/Ruby/Gems/1.8/gems/activesupport-2.3.5/lib/active_support/callbacks.rb:182:in `call'

[...]

Rails 2.3.4 boots without problems.

How can i help you to get this fixed?
Need other informations?

Thanks.