Rails - Feb 2007 - rake aborted!!

OK, I''ve created the following migration

class CreateProducts < ActiveRecord::Migration
  def self.up
    create_table :products do |t|
      t.column :title, :string
      t.column :description, :text
      t.column :image_url, :string
    end
  end

  def self.down
    drop_table :products
  end
end


This has created a table no problem.  I''ve then added another column
using the following

ruby script/generate migration add_price

This has worked.


class AddPrice < ActiveRecord::Migration
  def self.up
    add_column :products, :price, :decimal, :precision =>8, :scale =>2,
:default =>0
  end

  def self.down
    remove_column :products, :price
  end
end

After creating the 002 migration file above and running rake db:migrate
I get a rake aborted message which says:

You have a nil object when you didn''t expect it
You might have expected an instance of array
The error occured while evaluating nil.

WTF??  Help!!

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