I've updated redmine to the latest trunk. When I try to create a new group I get an error 500. 

Here is the trace from the event
Processing GroupsController#create (for 82.127.39.172 at 2010-01-21 12:36:30) [POST]
  Parameters: {"commit"=>"Create", "action"=>"create", "authenticity_token"=>"MN1CPMMOikf/8G32WFAo+fpkEVLzc+Cpi6V9APP2SZA=", "controller"=>"groups", "group"=>{"lastname"=>"a"}}

ActiveRecord::StatementInvalid (Mysql::Error: Column 'login' cannot be null: INSERT INTO `users` (`status`, `created_on`, `last_login_on`, `hashed_password`, `language`, `updated_on`, `admin`, `type`, `firstname`, `lastname`, `mail`, `identity_url`, `mail_notification`, `auth_source_id`, `login`) VALUES(1, '2010-01-21 12:36:30', NULL, '', '', '2010-01-21 12:36:30', 0, 'Group', '', 'a', '', NULL, 1, NULL, NULL)):
  app/controllers/groups_controller.rb:69:in `create'
  app/controllers/groups_controller.rb:68:in `create'
  passenger (2.2.8) lib/phusion_passenger/rack/request_handler.rb:92:in `process_request'
  passenger (2.2.8) lib/phusion_passenger/abstract_request_handler.rb:207:in `main_loop'
  passenger (2.2.8) lib/phusion_passenger/railz/application_spawner.rb:385:in `start_request_handler'
  passenger (2.2.8) lib/phusion_passenger/railz/application_spawner.rb:343:in `handle_spawn_application'
  passenger (2.2.8) lib/phusion_passenger/utils.rb:184:in `safe_fork'
  passenger (2.2.8) lib/phusion_passenger/railz/application_spawner.rb:341:in `handle_spawn_application'
  passenger (2.2.8) lib/phusion_passenger/abstract_server.rb:352:in `__send__'
  passenger (2.2.8) lib/phusion_passenger/abstract_server.rb:352:in `main_loop'
  passenger (2.2.8) lib/phusion_passenger/abstract_server.rb:196:in `start_synchronously'
  passenger (2.2.8) lib/phusion_passenger/abstract_server.rb:163:in `start'
  passenger (2.2.8) lib/phusion_passenger/railz/application_spawner.rb:209:in `start'
  passenger (2.2.8) lib/phusion_passenger/spawn_manager.rb:262:in `spawn_rails_application'
  passenger (2.2.8) lib/phusion_passenger/abstract_server_collection.rb:126:in `lookup_or_add'
  passenger (2.2.8) lib/phusion_passenger/spawn_manager.rb:256:in `spawn_rails_application'
  passenger (2.2.8) lib/phusion_passenger/abstract_server_collection.rb:80:in `synchronize'
  passenger (2.2.8) lib/phusion_passenger/abstract_server_collection.rb:79:in `synchronize'
  passenger (2.2.8) lib/phusion_passenger/spawn_manager.rb:255:in `spawn_rails_application'
  passenger (2.2.8) lib/phusion_passenger/spawn_manager.rb:154:in `spawn_application'
  passenger (2.2.8) lib/phusion_passenger/spawn_manager.rb:287:in `handle_spawn_application'
  passenger (2.2.8) lib/phusion_passenger/abstract_server.rb:352:in `__send__'
  passenger (2.2.8) lib/phusion_passenger/abstract_server.rb:352:in `main_loop'
  passenger (2.2.8) lib/phusion_passenger/abstract_server.rb:196:in `start_synchronously'

Rendering /var/lib/redmine-0.7-dev/public/500.html (500 Internal Server Error)

And here is my redmine environment

About your application's environment
Ruby version              1.8.6 (i486-linux)
RubyGems version          1.3.5
Rack version              1.0
Rails version             2.3.5
Active Record version     2.3.5
Active Resource version   2.3.5
Action Mailer version     2.3.5
Active Support version    2.3.5
Application root          /var/lib/redmine-0.7-dev
Environment               production
Database adapter          mysql
Database schema version   20091227112908

About your Redmine plugins
Google Analytics plugin              0.2.0
Redmine System Notification plugin   0.2.0
Bots filter                          1.02