rake about fails with rake aborted

I am a newbie to Ruby on Rails. Appreciate your patience. I was trying to run a demoapp downloaded from the Internet
and it fails, when I do a rake db:migrate. So I did a rake about. it gives the following error :

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C:\work\FusionChartsBluePrintApp>rake about
WARNING: 'require 'rake/rdoctask'' is deprecated.  Please use 'require 'rdoc/tas
k' (in RDoc 2.4.2+)' instead.
    at C:/RailsInstaller/Ruby1.9.3/lib/ruby/gems/1.9.1/gems/rake-0.9.2.2/lib/rak
e/rdoctask.rb
rake aborted!
Don't know how to build task 'about'
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Interestingly there is no GEMFILE in the root directory of this demoapp.

Before I went too far with this, I wanted to understand what could be wrong and if there are any steps that need to be performed, after copying the directory structure of the demoapp. 

I am running this on WINDOWS7 and have a working installation downloaded from railsinstall.org [ see below] and other demo apps work
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◦Ruby 1.9.3-p125
◦Rails 3.2
◦Bundler 1.0.18
◦Git 1.7.6
◦Sqlite 3.7.3
◦TinyTDS 0.4.5
◦SQL Server support 3.3.3
◦DevKit
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What could be wrong ?

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