# Uninitialized constant Tidy

**URL:** <https://www.ruby-forum.com/t/uninitialized-constant-tidy/91618>\
**Category:** Ruby\
**Created:** [April 10, 2007, 9:54pm UTC](https://www.ruby-forum.com/t/uninitialized-constant-tidy/91618 "2007-04-10T21:54:48Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![harry](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/f6c823/32.png) [@harry](https://www.ruby-forum.com/u/harry)\
**Post date:** [April 10, 2007, 9:54pm UTC](https://www.ruby-forum.com/t/uninitialized-constant-tidy/91618/1 "2007-04-10T21:54:48Z")

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Hi,

I was trying to start my app, but always got this error:

c:/user/software/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_supp  
ort/dependencies.rb:266:in `load_missing_constant': uninitialized constant Tidy (NameError) from c:/user/software/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/li b/active_support/dependencies.rb:452:in`enumerations\_original\_const\_missing’  
from  
./script/…/config/…/vendor/plugins/enumerations\_mixin/lib/active\_  
record/virtual\_enumerations.rb:63:in `const_missing' from c:/user/software/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/li b/active_support/dependencies.rb:464:in`const\_missing’  
from ./script/…/config/…/config/custom\_environment.rb:26

I installed tidy gem and copied the tidy.dll to windows and ruby root  
directories, but still have this error.

Anyone knows how to fix it?

Thanks,  
Harry