Rails - Mar 2007 - Undefined method: hashed_password ?

I bought the Agile book to learn Rails, and everything was going
smooth until Iteration F1:  Adding Users.  I''ve double checked my
code, used the code provided by the book, and still it returns this
same error message:

****

 NoMethodError in LoginController#add_user

undefined method `hashed_password='' for #<User:0x473f0d8>

RAILS_ROOT: ./script/../config/..
Application Trace | Framework Trace | Full Trace
C:/InstantRails-1.6-win/InstantRails/ruby/lib/ruby/gems/1.8/gems/
activerecord-1.15.2/lib/active_record/base.rb:1858:in `method_missing''
#{RAILS_ROOT}/app/models/user.rb:40:in `password=''
#{RAILS_ROOT}/app/controllers/login_controller.rb:38:in `new''
#{RAILS_ROOT}/app/controllers/login_controller.rb:38:in `add_user''

Request

Parameters: {"user"=>{"name"=>"al",
"password_confirmation"=>"cl",
"password"=>"bl"}, "commit"=>"Add
User"}

Show session dump

---
flash: !map:ActionController::Flash::FlashHash {}


Response
Headers: {"cookie"=>[],
"Cache-Control"=>"no-cache"}

****

Any Ideas?


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