# Uninitialized constant AuthenticatedSystem

**URL:** <https://www.ruby-forum.com/t/uninitialized-constant-authenticatedsystem/163263>\
**Category:** Rails\
**Created:** [March 18, 2009, 7:40pm UTC](https://www.ruby-forum.com/t/uninitialized-constant-authenticatedsystem/163263 "2009-03-18T19:40:46Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![sprsquish](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/d9b06d/32.png) [@sprsquish](https://www.ruby-forum.com/u/sprsquish)\
**Post date:** [March 18, 2009, 7:40pm UTC](https://www.ruby-forum.com/t/uninitialized-constant-authenticatedsystem/163263/1 "2009-03-18T19:40:46Z")

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I’ve just had a little snafu installing restful\_authentication in a  
new app, and thought I would list it here for archival purposes.

Firstly, there are messages about files not existing. My fix was to  
manually create lib and test/fixtures directories. (Remember, this is  
a brand new application.)

Secondly, There were “uninitialized constant” messages re.  
AuthenticatedSystem. My fix was to add “require  
‘authenticated\_system’” to the file where AuthenticatedSystem was  
included.