Problems using exception_notification 2.3.3.0

Hi.

I am using rails 2.3.5

I just installed exception_notification 2.3.3.0 using 'sudo gem install
exception_notification'

I have add config.gem "exception_notification" in environment.rb and
'include ExceptionNotification::Notifiable' in application_controller.rb

Now I am trying it out in development environment.

It seems to catch my exception but fails to send email, here is the
stacktrace found in the log:
  undefined method `find_template' for #<Array:0x7f4cc5727d88>
    /var/lib/gems/1.8/gems/actionmailer-2.3.5/lib/action_mailer/base.rb:582:in `candidate_for_layout?'
    /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/layout.rb:245:in `pick_layout'
    /var/lib/gems/1.8/gems/actionmailer-2.3.5/lib/action_mailer/base.rb:566:in `render'
    /var/lib/gems/1.8/gems/actionmailer-2.3.5/lib/action_mailer/base.rb:553:in `render_message'
    /var/lib/gems/1.8/gems/actionmailer-2.3.5/lib/action_mailer/base.rb:493:in `create!'
    /var/lib/gems/1.8/gems/actionmailer-2.3.5/lib/action_mailer/base.rb:452:in `initialize'
    /var/lib/gems/1.8/gems/actionmailer-2.3.5/lib/action_mailer/base.rb:395:in `new'
    /var/lib/gems/1.8/gems/actionmailer-2.3.5/lib/action_mailer/base.rb:395:in `method_missing'
    /var/lib/gems/1.8/gems/exception_notification-2.3.3.0/lib/exception_notification/notifiable.rb:64:in `notify_about_exception'
    /var/lib/gems/1.8/gems/exception_notification-2.3.3.0/lib/exception_notification/notifiable.rb:49:in `rescue_action_locally'
    /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/rescue.rb:152:in `rescue_action_without_handler'
    /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/rescue.rb:74:in `rescue_action'
    /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/base.rb:532:in `send'
    /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/base.rb:532:in `process_without_filters'
    /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/filters.rb:606:in `process'
    /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/rescue.rb:65:in `call_with_exception'
    /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:90:in `dispatch'
    /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:121:in `_call'
    /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:130:in `build_middleware_stack'
    /var/lib/gems/1.8/gems/activerecord-2.3.5/lib/active_record/query_cache.rb:29:in `call'
    /var/lib/gems/1.8/gems/activerecord-2.3.5/lib/active_record/query_cache.rb:29:in `call'
    /var/lib/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/query_cache.rb:34:in `cache'
    /var/lib/gems/1.8/gems/activerecord-2.3.5/lib/active_record/query_cache.rb:9:in `cache'
    /var/lib/gems/1.8/gems/activerecord-2.3.5/lib/active_record/query_cache.rb:28:in `call'
    /var/lib/gems/1.8/gems/activerecord-2.3.5/lib/active_record/connection_adapters/abstract/connection_pool.rb:361:in `call'
    /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/string_coercion.rb:25:in `call'
    /var/lib/gems/1.8/gems/rack-1.0.1/lib/rack/head.rb:9:in `call'
    /var/lib/gems/1.8/gems/rack-1.0.1/lib/rack/methodoverride.rb:24:in
`call'
    /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/params_parser.rb:15:in `call'
    /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/session/cookie_store.rb:93:in `call'
    /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/failsafe.rb:26:in `call'
    /var/lib/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in `call'
    /var/lib/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in
`synchronize'
    /var/lib/gems/1.8/gems/rack-1.0.1/lib/rack/lock.rb:11:in `call'
    /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:114:in `call'
    /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/reloader.rb:34:in `run'
    /var/lib/gems/1.8/gems/actionpack-2.3.5/lib/action_controller/dispatcher.rb:108:in `call'
    /var/lib/gems/1.8/gems/rails-2.3.5/lib/rails/rack/static.rb:31:in
`call'
    /var/lib/gems/1.8/gems/rack-1.0.1/lib/rack/urlmap.rb:46:in `call'
    /var/lib/gems/1.8/gems/rack-1.0.1/lib/rack/urlmap.rb:40:in `each'
    /var/lib/gems/1.8/gems/rack-1.0.1/lib/rack/urlmap.rb:40:in `call'
    /var/lib/gems/1.8/gems/rails-2.3.5/lib/rails/rack/log_tailer.rb:17:in `call'
    /var/lib/gems/1.8/gems/rack-1.0.1/lib/rack/content_length.rb:13:in
`call'
    /var/lib/gems/1.8/gems/rack-1.0.1/lib/rack/chunked.rb:15:in `call'
    /var/lib/gems/1.8/gems/rack-1.0.1/lib/rack/handler/mongrel.rb:64:in `process'
    /var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:159:in
`process_client'
    /var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:158:in `each'
    /var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:158:in
`process_client'
    /var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `run'
    /var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in
`initialize'
    /var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `new'
    /var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `run'
    /var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in
`initialize'
    /var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in `new'
    /var/lib/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in `run'
    /var/lib/gems/1.8/gems/rack-1.0.1/lib/rack/handler/mongrel.rb:34:in `run'
    /var/lib/gems/1.8/gems/rails-2.3.5/lib/commands/server.rb:111
    /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in
`gem_original_require'
    /usr/lib/ruby/1.8/rubygems/custom_require.rb:31:in `require'
    ./script/server:3

Does anybody have an idea of what is wrong?

Jarl