Hi there, I have a model class Account < ActiveRecord::Base has_many: projects The accounts table holds company information so as I created another model to represent project partners thus: class Partner < Account has_and_belongs_to_many :projects #project.account pulls up the project owner and #project.partners pulls up all partners, including the owner. Now, this all seems to work fine but every now and then I get the following error message: (eval):1:in `alias_method'': undefined method `destroy_without_callbacks'' for class `Partner'' ....trace..... This error occured while loading the following files: ./script/../config/../app/controllers/application.rb login_system.rb user.rb account.rb project.rb partner.rb I can''t figure out how to correct this. Any ideas? Regards Adam Groves -- Posted via http://www.ruby-forum.com/.