node.module, line 1321:
    $form['texts']['#title'] = t('Properties');

(was 'text')

node.module, line 244:
      return $node_types[$type];
(was $node instead of $type)

content.module, line 120:
return confirm_form('_content_admin_type_delete', $form, t('Are you sure you want to delete the content type %type?', array('%type' => theme('placeholder', $type->label))), 'admin/settings/content-types', t('If you have any content left in this content type, it will be permanently deleted. This action cannot be undone.'), t('Delete'), t('Cancel'));

(note the change in path to 'admin/settings/content-types')

database.4.1.mysql:
remove the lines at the top:
drop database ...
create database ...
use database ...