Not able to add fields to newly created content types

I upgraded my site to drupal-cvs (// $Id: system.module,v 1.386 2006/10/26 22:07:03 unconed Exp $) and installed CCK (// $Id: content.module,v 1.82 2006/10/24 13:47:26 karens Exp $). I am able to add fields to existing (defined by installation) content types, but whenever i define a new content type i'm not. So when i edit the 'page' type i will get the 'edit', 'manage fields' and 'add field' tabs, but when i edit a newly created type 'foobar' i won't.