Redmine

I wanted to create new subproject and I received Internal error 500. I'm using latest svn build (2.3.1.stable.11918) on openSUSE 12.2 with Apache and Passenger. Here's the relevant log:

Started GET "/projects/new?parent_id=main" for my_ip at 2013-06-04 14:19:52 +0200
Processing by ProjectsController#new as HTML
  Parameters: {"parent_id"=>"main"}
  Current user: my_username (id=3)
Completed 500 Internal Server Error in 42ms

NoMethodError (undefined method `default_projects_tracker_ids' for #<Class:0xb2f2168>):
  app/models/project.rb:129:in `initialize'
  app/controllers/projects_controller.rb:73:in `new'
  app/controllers/projects_controller.rb:73:in `new'

If this helps anyhow, my redmine installation is also affected by #13903 - I did a fresh installation from svn sources and I migrated database from previuos installation (2.1.2; I upgraded the db without any problems).