# ArgumentError - AuthenticatedSystem

**URL:** <https://www.ruby-forum.com/t/argumenterror-authenticatedsystem/91056>\
**Category:** Rails\
**Created:** [April 4, 2007, 5:55am UTC](https://www.ruby-forum.com/t/argumenterror-authenticatedsystem/91056 "2007-04-04T05:55:39Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![nielsene](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/n/bc79bd/32.png) [@nielsene](https://www.ruby-forum.com/u/nielsene)\
**Post date:** [April 4, 2007, 5:55am UTC](https://www.ruby-forum.com/t/argumenterror-authenticatedsystem/91056/1 "2007-04-04T05:55:39Z")

</div>

Any idea what would cause this error and how to fix it? It might be  
caused by trying to access the server concurrently with the same user.  
I found a reference to a similar bug but it should have already been  
fixed. I’m using rails 1.2.2.

ArgumentError (A copy of AuthenticatedSystem has been removed from the  
module tree but is still active!):  
C:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.1/lib/  
active\_support/dependencies.rb:237:in `load_missing_constant' C:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.1/lib/ active_support/dependencies.rb:452:in`const\_missing’  
/lib/authenticated\_system.rb:11:in `current_user' /lib/authenticated_system.rb:6:in`logged\_in?’  
/lib/authenticated\_system.rb:53:in `login_required' C:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/filters.rb:456:in`call’  
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/  
action\_controller/filters.rb:435:in `call' C:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/filters.rb:637:in`call\_filter’  
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/  
action\_controller/filters.rb:619:in `perform_action_without_benchmark' C:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/benchmarking.rb:66:in`perform\_action\_without\_rescue’  
C:/ruby/lib/ruby/1.8/benchmark.rb:293:in `measure' C:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/benchmarking.rb:66:in`perform\_action\_without\_rescue’  
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/  
action\_controller/rescue.rb:83:in `perform_action' C:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/base.rb:430:in`process\_without\_filters’  
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/  
action\_controller/filters.rb:624:in  
`process_without_session_management_support' C:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/ action_controller/session_management.rb:114:in`process’  
C:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.2/lib/  
action\_controller/base.rb:330:in `process' C:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.2/lib/dispatcher.rb:41:in`dispatch’  
C:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel/  
rails.rb:78:in `process' C:/ruby/lib/ruby/1.8/thread.rb:135:in`synchronize’  
C:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel/  
rails.rb:76:in `process' C:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/ mongrel.rb:618:in`process\_client’  
C:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/  
mongrel.rb:617:in `process_client' C:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/ mongrel.rb:736:in`run’  
C:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/  
mongrel.rb:736:in `run' C:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/ mongrel.rb:720:in`run’  
C:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel/  
configurator.rb:271:in `run' C:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel/ configurator.rb:270:in`run’  
C:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/bin/  
mongrel\_rails:127:in `run' C:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/lib/mongrel/ command.rb:211:in`run’  
C:/ruby/lib/ruby/gems/1.8/gems/mongrel-1.0.1-mswin32/bin/  
mongrel\_rails:243  
C:\ruby\bin\mongrel\_rails:18  
-e:3