# Ruby 1.8.6 + Rails 1.2.3 + ErrorNotification == NameError !?

**URL:** <https://www.ruby-forum.com/t/ruby-1-8-6-rails-1-2-3-errornotification-nameerror/110462>\
**Category:** Rails\
**Created:** [July 26, 2007, 4:36pm UTC](https://www.ruby-forum.com/t/ruby-1-8-6-rails-1-2-3-errornotification-nameerror/110462 "2007-07-26T16:36:50Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![none](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/f19dbf/32.png) [@none](https://www.ruby-forum.com/u/none)\
**Post date:** [July 26, 2007, 4:36pm UTC](https://www.ruby-forum.com/t/ruby-1-8-6-rails-1-2-3-errornotification-nameerror/110462/1 "2007-07-26T16:36:50Z")

</div>

Hallo Everybody,

I updated recently to the latest versions of Ruby and Rails. Now it  
seems to me that the plugin ErrorNotification doesn’t run anymore. I  
even tried to create a new project, installed the plugin and added the  
following line to my development.rb:

```auto
ExceptionNotifier.exception_recipients = "removed_email_address@domain.invalid"
```

When I try to start my server it hangs with an error. I tried it on  
Mac and Windows, in development- and production-mode, with webrick and  
mongrel and I’m always getting the following error:

```auto
/usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/
active_support/dependencies.rb:477:in const_missing': uninitialized
constant Rails::Initializer::ExceptionNotifiable (NameError)
        from /Users/dm/Documents/rails/pws_de/config/../config/
environments/development.rb:58:in load_environment'
        from /usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/
initializer.rb:204:in `load_environment'
        from /usr/local/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/
active_support/core_ext/kernel/reporting.rb:11:in `silence_warnings'
        from /usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/
initializer.rb:201:in `load_environment'
        from /usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/
initializer.rb:85:in `process'
        from /usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/
initializer.rb:43:in `send'
        from /usr/local/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/
initializer.rb:43:in `run'
        from /Users/dm/Documents/rails/pws_de/config/environment.rb:13
         ... 11 levels...
        from /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/lib/
mongrel/command.rb:211:in `run'
        from /usr/local/lib/ruby/gems/1.8/gems/mongrel-1.0.1/bin/
mongrel_rails:243
        from /usr/local/bin/mongrel_rails:16:in `load'
        from /usr/local/bin/mongrel_rails:16

```

Has anybody an idea, what could be the problem?

Thanks in advance

---

<div class="post-metadata">

**Author:** ![none](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/f19dbf/32.png) [@none](https://www.ruby-forum.com/u/none)\
**Post date:** [July 27, 2007, 11:07am UTC](https://www.ruby-forum.com/t/ruby-1-8-6-rails-1-2-3-errornotification-nameerror/110462/2 "2007-07-27T11:07:31Z")

</div>

Did anybody encounter a similar problem?

---

<div class="post-metadata">

**Author:** ![none](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/f19dbf/32.png) [@none](https://www.ruby-forum.com/u/none)\
**Post date:** [August 7, 2007, 4:46pm UTC](https://www.ruby-forum.com/t/ruby-1-8-6-rails-1-2-3-errornotification-nameerror/110462/3 "2007-08-07T16:46:13Z")

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alright, I found the problem. i had rails 1.2.3.6906 installed.  
uninstalled it and everything was working fine again.

ps: 1.2.3.71xx didn’t work either.