Conflict with Admin Menu

Warning: strnatcasecmp() expects parameter 1 to be string, array given in admin_menu_element_sort() (line 674 of /mnt/hgfs/WDRIVE/www/commercemenu/sites/all/modules/admin_menu/admin_menu.module).
Warning: strnatcasecmp() expects parameter 1 to be string, array given in admin_menu_element_sort() (line 674 of /mnt/hgfs/WDRIVE/www/commercemenu/sites/all/modules/admin_menu/admin_menu.module).
Warning: strnatcasecmp() expects parameter 2 to be string, array given in admin_menu_element_sort() (line 674 of /mnt/hgfs/WDRIVE/www/commercemenu/sites/all/modules/admin_menu/admin_menu.module).
Warning: strnatcasecmp() expects parameter 1 to be string, array given in admin_menu_element_sort() (line 674 of /mnt/hgfs/WDRIVE/www/commercemenu/sites/all/modules/admin_menu/admin_menu.module).
Warning: uasort(): Array was modified by the user comparison function in theme_admin_menu_links() (line 598 of /mnt/hgfs/WDRIVE/www/commercemenu/sites/all/modules/admin_menu/admin_menu.module).
Warning: htmlspecialchars() expects parameter 1 to be string, array given in check_plain() (line 1572 of /mnt/hgfs/WDRIVE/www/commercemenu/includes/bootstrap.inc).
Warning: htmlspecialchars() expects parameter 1 to be string, array given in check_plain() (line 1572 of /mnt/hgfs/WDRIVE/www/commercemenu/includes/bootstrap.inc).

screenshot: http://i.minus.com/itmIgE7YGWKOR.png

quando acesso o admin menu e vou até, Loja > Configurações > Envio > Shipping Services, são exibidas duas linhas em branco, parece que o erro está aí (screenshot) -> http://i.minus.com/iytY2Jg3JaV0R.jpg

módulos utilizados para reproduzir o erro:

commerce 7.x-1.x-dev
admin_menu 7.x-3.x-dev
shipping 7.x-2.x-dev
commerce_correios 7.x-2.x-dev
e demais modulos requeridos...