Adding initial Data to Database in Rails 3.1.3 doesnt work with Rake Tasks (Bootstrap) nor Rake Migration
Trying to follow this Help ( http://stackoverflow.com/questions/62201/how-and-whether-to-populate-rails-application-with-initial-data ) with Rake Boostrap Tasks, i got this Error:

    name@CURIUM ~/Documents/developing/rubyonrails/checklist (master)
    $ rake db:drop
    
    name@CURIUM ~/Documents/developing/rubyonrails/checklist (master)
    $ rake db:migrate
    # [...]
    ==  CreateFieldattributes: migrating ==========================================
    -- create_table(:fieldattributes)
       -> 0.0030s
    ==  CreateFieldattributes: migrated (0.0040s) =================================
    #[...]
    name@CURIUM ~/Documents/developing/rubyonrails/checklist (master)
    $ rake bootstrap:all
    rake aborted!
    uninitialized constant Fieldattributes
    
    Tasks: TOP => bootstrap:all => bootstrap:default_fieldattributes
    (See full trace by running task with --trace)
    
    name@CURIUM ~/Documents/developing/rubyonrails/checklist (master)
    $

This is my [RAILS_ROOT]/lib/tasks/bootstrap.rake:

    namespace :bootstrap do
      desc "some blabla"
      task :default_fieldattributes => :environment do
        Fieldattributes.new(:attributename => 'text_field')
        Fieldattributes.new(:attributename => 'check_box')
        # [...]
        Fieldattributes.new(:attributename => 'text_area')
        Fieldattributes.new(:attributename => 'url_field')
      end
    
      desc "also blabla"
      task :all => [:default_fieldattributes]
    end

As you can see, my database is created (migrated) correctly. 

Also changing the new "change"-Migration way to "up" and "down", as written in "http://api.rubyonrails.org/classes/ActiveRecord/Migration.html":

    class CreateFieldattributes < ActiveRecord::Migration
      def up
        create_table :fieldattributes do |t|
          t.string :attributename
          t.timestamps
        end
        Fieldattributes.create(:attributename => "Test")
      end
      
      def down
        drop_table :fieldattributes
      end
    end

doesnt work:

    name@CURIUM ~/Documents/developing/rubyonrails/checklist (master)
    $ rake db:migrate
    ==  CreateFieldattributes: migrating ==========================================
    -- create_table(:fieldattributes)
       -> 0.0010s
    rake aborted!
    An error has occurred, this and all later migrations canceled:
    
    uninitialized constant CreateFieldattributes::Fieldattributes
    
    Tasks: TOP => db:migrate
    (See full trace by running task with --trace)
    
    name@CURIUM ~/Documents/developing/rubyonrails/checklist (master)
    $ rails -v
    Rails 3.1.3 (Windows!)
    
    name@CURIUM ~/Documents/developing/rubyonrails/checklist (master)

Could anyone help me with this?
Thanks in advanced!
Adding initial Data to Database in Rails 3.1.3 doesnt work with Rake Tasks (Bootstrap) nor Rake Migration
===

Trying to follow this Help ( http://stackoverflow.com/questions/62201/how-and-whether-to-populate-rails-application-with-initial-data ) with Rake Boostrap Tasks, i got this Error:

    name@CURIUM ~/Documents/developing/rubyonrails/checklist (master)
    $ rake db:drop
    
    name@CURIUM ~/Documents/developing/rubyonrails/checklist (master)
    $ rake db:migrate
    # [...]
    ==  CreateFieldattributes: migrating ==========================================
    -- create_table(:fieldattributes)
       -> 0.0030s
    ==  CreateFieldattributes: migrated (0.0040s) =================================
    #[...]
    name@CURIUM ~/Documents/developing/rubyonrails/checklist (master)
    $ rake bootstrap:all
    rake aborted!
    uninitialized constant Fieldattributes
    
    Tasks: TOP => bootstrap:all => bootstrap:default_fieldattributes
    (See full trace by running task with --trace)
    
    name@CURIUM ~/Documents/developing/rubyonrails/checklist (master)
    $

This is my [RAILS_ROOT]/lib/tasks/bootstrap.rake:

    namespace :bootstrap do
      desc "some blabla"
      task :default_fieldattributes => :environment do
        Fieldattributes.new(:attributename => 'text_field')
        Fieldattributes.new(:attributename => 'check_box')
        # [...]
        Fieldattributes.new(:attributename => 'text_area')
        Fieldattributes.new(:attributename => 'url_field')
      end
    
      desc "also blabla"
      task :all => [:default_fieldattributes]
    end

As you can see, my database is created (migrated) correctly. 

Also changing the new "change"-Migration way to "up" and "down", as written in "http://api.rubyonrails.org/classes/ActiveRecord/Migration.html":

    class CreateFieldattributes < ActiveRecord::Migration
      def up
        create_table :fieldattributes do |t|
          t.string :attributename
          t.timestamps
        end
        Fieldattributes.create(:attributename => "Test")
      end
      
      def down
        drop_table :fieldattributes
      end
    end

doesnt work:

    name@CURIUM ~/Documents/developing/rubyonrails/checklist (master)
    $ rake db:migrate
    ==  CreateFieldattributes: migrating ==========================================
    -- create_table(:fieldattributes)
       -> 0.0010s
    rake aborted!
    An error has occurred, this and all later migrations canceled:
    
    uninitialized constant CreateFieldattributes::Fieldattributes
    
    Tasks: TOP => db:migrate
    (See full trace by running task with --trace)
    
    name@CURIUM ~/Documents/developing/rubyonrails/checklist (master)
    $ rails -v
    Rails 3.1.3 (Windows!)
    
    name@CURIUM ~/Documents/developing/rubyonrails/checklist (master)

Could anyone help me with this?
Thanks in advanced!