Creating a user with through the drupal interface without selecting an organic group fails

-Using the drupal interface to create a new user
-Drupal 5.7; localization:de-DE
-When selecting NONE of the existing organic groups following error is thrown:

/var/www/drupal/sites/all/modules/civicrm/CRM/Core/Error.php, backtrace, 253
/var/www/drupal/sites/all/modules/civicrm/CRM/Bridge/OG/Utils.php, fatal, 111
/var/www/drupal/sites/all/modules/civicrm/CRM/Bridge/OG/Drupal.php, groupID, 198
/var/www/drupal/sites/all/modules/civicrm/drupal/civicrm_og_sync.module, og, 118
, civicrm_og_sync_og,
/var/www/drupal/includes/module.inc, call_user_func_array, 406
/var/www/drupal/sites/all/modules/og/og.module, module_invoke_all, 435
/var/www/drupal/sites/all/modules/og/og.module, og_save_subscription, 776
/var/www/drupal/sites/all/modules/og/og.module, og_subscribe_user, 2193
/var/www/drupal/modules/user/user.module, og_user, 22
/var/www/drupal/modules/user/user.module, user_module_invoke, 216
/var/www/drupal/modules/user/user.module, user_save, 1252
, user_register_submit,
/var/www/drupal/includes/form.inc, call_user_func_array, 430
/var/www/drupal/includes/form.inc, drupal_submit_form, 258
/var/www/drupal/includes/form.inc, drupal_process_form, 80
/var/www/drupal/modules/user/user.module, drupal_get_form, 2353
, user_admin,
/var/www/drupal/includes/menu.inc, call_user_func_array, 418
/var/www/drupal/index.php, menu_execute_active_handler, 15