# Uninitialized constant Rails::Initializer::MemCache

**URL:** <https://www.ruby-forum.com/t/uninitialized-constant-rails-memcache/188092>\
**Category:** Deployment\
**Created:** [May 5, 2010, 4:26pm UTC](https://www.ruby-forum.com/t/uninitialized-constant-rails-memcache/188092 "2010-05-05T16:26:20Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![tedomeara](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/ecd19e/32.png) [@tedomeara](https://www.ruby-forum.com/u/tedomeara)\
**Post date:** [May 5, 2010, 4:26pm UTC](https://www.ruby-forum.com/t/uninitialized-constant-rails-memcache/188092/1 "2010-05-05T16:26:20Z")

</div>

I’ve installed just about every library/gem that I could find for  
memcached/memcache, but everytime I attempt to run my application I get  
this error:

Error message:  
uninitialized constant Rails::Initializer::MemCache

Exception class:  
NameError

My environment.rb has these lines:

> require ‘memcache’  
> config.gem “memcache-client”, :lib =\> “memcache”

I have tried $ telnet localhost 11211 and memcached is definitely  
running. Any ideas?

(I’m running Apache2/Passenger)