Rails newbie to 2.0: problem with "ruby script/generate scaffold"

Running:         gem 1.3.5         Rails 2.3.5         MySQL 5.0.27-community-nt

Created databases:   rts_development;   rts_test;

Showed databases:   information_schema   mysql   rts_development   rts_test

Setup privileges on databases:   grant all on rts_development.* to root'@'localhost' identified by 'xxxxxx';   grant all on rts_test.* to 'root'@'localhost' identified by 'xxxxxx';

Tried:   ruby script/generate scaffold vendors nick_name:string qb_name:string

Got:   [snip]config/initializers/new_rails_defaults.rb:14:   undefined method `generate_best_match=' for ActionController::Routing:Module (NoMethodError)