Update db:sessions:create to use the proper generator.

railties/lib/generators/rails/session_migration/session_migration_generator.rb

 module Rails
   module Generators
     class SessionMigrationGenerator < NamedBase #metagenerator
-      argument :name, :type => :string, :default => "add_session_table"
+      argument :name, :type => :string, :default => "add_sessions_table"
       hook_for :orm, :required => true
     end
   end

railties/lib/tasks/databases.rake

@@ -411,9 +411,9 @@ namespace :db do
     desc "Creates a sessions migration for use with ActiveRecord::SessionStore"
     task :create => :environment do
       raise "Task unavailable to this database (no migration support)" unless ActiveRecord::Base.connection.supports_migrations?
-      require 'rails_generator'
-      require 'rails_generator/scripts/generate'
-      Rails::Generator::Scripts::Generate.new.run(["session_migration", ENV["MIGRATION"] || "CreateSessions"])
+      require 'generators'
+      require 'generators/rails/session_migration/session_migration_generator'
+      Rails::Generators::SessionMigrationGenerator.start [ ENV["MIGRATION"] || "add_sessions_table" ]
     end
 
     desc "Clear the sessions table"

railties/lib/tasks/documentation.rake

@@ -21,7 +21,7 @@ namespace :doc do
     rdoc.rdoc_files.include('vendor/rails/railties/CHANGELOG')
     rdoc.rdoc_files.include('vendor/rails/railties/MIT-LICENSE')
     rdoc.rdoc_files.include('vendor/rails/railties/README')
-    rdoc.rdoc_files.include('vendor/rails/railties/lib/{*.rb,commands/*.rb,rails_generator/*.rb}')
+    rdoc.rdoc_files.include('vendor/rails/railties/lib/{*.rb,commands/*.rb,generators/*.rb}')
     rdoc.rdoc_files.include('vendor/rails/activerecord/README')
     rdoc.rdoc_files.include('vendor/rails/activerecord/CHANGELOG')
     rdoc.rdoc_files.include('vendor/rails/activerecord/lib/active_record/**/*.rb')