# Ferret problem, load missing constant

**URL:** <https://www.ruby-forum.com/t/ferret-problem-load-missing-constant/170033>\
**Category:** Ferret\
**Created:** [June 11, 2009, 3:15pm UTC](https://www.ruby-forum.com/t/ferret-problem-load-missing-constant/170033 "2009-06-11T15:15:40Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![leossouza](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/ad7895/32.png) [@leossouza](https://www.ruby-forum.com/u/leossouza)\
**Post date:** [June 11, 2009, 3:15pm UTC](https://www.ruby-forum.com/t/ferret-problem-load-missing-constant/170033/1 "2009-06-11T15:15:40Z")

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I am having problems with ferret server. My site is crashing sometimes (  
I can’t identify when or why! ). The error it throws is the following:

A LoadError occurred in application#row:

Expected  
/sites/xxx/releases/20090608140506/app/controllers/thursday\_newsletters\_controller.rb  
to define ThursdayNewslettersController  
/usr/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active\_support/dependencies.rb:249:in  
`load\_missing\_constant’

This error also happens to other controllers that have a ferret server  
associated in the model.

Can this be a problem of performance? If so, is there a way to have more  
than one server running ferret?  
Maybe is a problem with activesupport 2.0.2?

Thanks!