> ezra:~/_book/kirby ez$ script/generate migration initial_schema
> /usr/lib/ruby/gems/1.8/gems/activerecord-1.13.2/lib/active_record/
> connection_adapters/abstract/connection_specification.rb:79:in
> `establish_connection': database configuration specifies nonexistent
> kirbybase adapter (ActiveRecord::AdapterNotFound)

Have you require'd kirbybase_adapter? You need to add the require in
the config/environment.rb.