Page are not editable after first install

[paulhuisman]

Notice: Undefined index: page_node_form in drupal_retrieve_form() (line 765 of /home/paul/projects/drupaltechtalk/builds/20130204-162832/includes/form.inc).

Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'page_node_form' not found or invalid function name in drupal_retrieve_form() (line 800 of /home/paul/projects/drupaltechtalk/builds/20130204-162832/includes/form.inc).