# Undefined method \`alias\_method\_chain' for ActiveRecord::Vali

**URL:** <https://www.ruby-forum.com/t/undefined-method-alias-method-chain-for-activerecord-vali/107803>\
**Category:** Rails\
**Created:** [June 26, 2007, 12:58pm UTC](https://www.ruby-forum.com/t/undefined-method-alias-method-chain-for-activerecord-vali/107803 "2007-06-26T12:58:04Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![hanoc](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/h/f19dbf/32.png) [@hanoc](https://www.ruby-forum.com/u/hanoc)\
**Post date:** [June 26, 2007, 12:58pm UTC](https://www.ruby-forum.com/t/undefined-method-alias-method-chain-for-activerecord-vali/107803/1 "2007-06-26T12:58:04Z")

</div>

Hi,

I had a problem with a dependency so I decided to upgrade from rails v.  
1.1.6 to rails v. 1.2.3.

The problem persits and I don’t know if it’s a dependency issue or  
another thing…

here’s all the information I got…

The webpage is showing:  
Application error  
Rails application failed to start properly

And if i execute:  
ruby ./dispatch.fcgi

If I try to boot webbrick i get this:  
[http://pastie.caboo.se/73579](http://pastie.caboo.se/73579)  
almost same error if I execute ./dispatch.fcgi:  
[http://pastie.caboo.se/73580](http://pastie.caboo.se/73580)

My gem list can be found here  
[http://pastie.caboo.se/73566](http://pastie.caboo.se/73566)

My enviroment.rb is telling this:  
RAILS\_GEM\_VERSION = '1.2.3

And i have rails freezed to that version…

I’ve tried to downgrade and upgrade everything… but I don’t know if  
I’m going in the right direction… any idea?