Fatal error: Call to undefined function settings_prepare_settings_form() in C:\root\bt10\sites\all\modules\bittorrent\bt_torrent

Drupal 6.12 (New clear installation)
Installed modules: "BitTorrent, BT Tracker" (i didn't install bt_profile), Content, Content Copy, FileField, Number, Option Widgets, Text, Views, Views UI
when i click links: "admin/bt/torrent" and "admin/bt/tracker" , they both show fatal error:
page : http://blog.bojistudio.org/bt10/admin/bt/torrent

    Fatal error: Call to undefined function settings_prepare_settings_form() in C:\root\bt10\sites\all\modules\bittorrent\bt_torrent\bt_torrent.admin.inc on line 76
   

page : http://drupal.org/node/add/project-issue/bittorrent

   Fatal error: Call to undefined function settings_prepare_settings_form() in C:\root\bt10\sites\all\modules\bittorrent\bt_tracker\bt_tracker.admin.inc on line 111