D:\InstantRails\rails_apps\depot>rake db:migrate
(in D:/InstantRails/rails_apps/depot)
== AddPrice: migrating ========================================================
-- add_column(:products, :price, :decimal, {:precision=>8, :scale=>2, :default=>
0})
rake aborted!
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.[]