D7 alpha to beta upgrade problem: comments disappear

Good news: These problems were fixed by concerted re-saving of comment and node type forms.

Comment contents don't show up. Trying to investigate that, and…

http://definitivedrupal.org/admin/structure/types/manage/book/comment/display

Nov 23 03:34:12 sojourner php-cgi: PHP Fatal error: Unsupported operand types in /var/local/drupal/dgd7/drupal/modules/field_ui/field_ui.admin.inc on line 973

Attempting to edit a timeline point:

Nov 23 02:37:33 sojourner php-cgi: PHP Fatal error: Cannot create references to/from string offsets nor overloaded objects in /var/local/drupal/dgd7/drupal/includes/common.inc on line 6040

Attempting to edit the point content type:

PDOException: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'module' in 'field list': UPDATE {node_type} SET type=:db_update_placeholder_0, name=:db_update_placeholder_1, base=:db_update_placeholder_2, has_title=:db_update_placeholder_3, title_label=:db_update_placeholder_4, description=:db_update_placeholder_5, help=:db_update_placeholder_6, custom=:db_update_placeholder_7, modified=:db_update_placeholder_8, locked=:db_update_placeholder_9, disabled=:db_update_placeholder_10, module=:db_update_placeholder_11 WHERE (type = :db_condition_placeholder_0) ; Array ( [:db_update_placeholder_0] => point [:db_update_placeholder_1] => Point [:db_update_placeholder_2] => node_content [:db_update_placeholder_3] => 1 [:db_update_placeholder_4] => Title [:db_update_placeholder_5] => A point on the timeline; an event associated with a date. [:db_update_placeholder_6] => [:db_update_placeholder_7] => 1 [:db_update_placeholder_8] => 1 [:db_update_placeholder_9] => 0 [:db_update_placeholder_10] => 0 [:db_update_placeholder_11] => node [:db_condition_placeholder_0] => point ) in node_type_save() (line 515 of /var/local/drupal/dgd7/drupal/modules/node/node.module).