WP Marketplace: Coding errors

The following error notices are being logged:

Notice: Undefined index: wpmpfile in /wpmarketplace/wpmarketplace.php on line 578
Notice: Undefined index: wpmp_update_cart in /wpmarketplace/libs/cart.php on line 81
Notice: Undefined index: wpmp_remove_cart_item in /wpmarketplace/libs/cart.php on line 70
Notice: Undefined index: checkout_billing in /wpmarketplace/wpmarketplace.php on line 701
Notice: Undefined index: checkout_shipping in /wpmarketplace/wpmarketplace.php on line 737
Notice: Undefined index: checkout_payment in /wpmarketplace/wpmarketplace.php on line 753
Notice: Undefined index: wpmpaction in /wpmarketplace/wpmarketplace.php on line 769
Notice: Undefined index: action in /wpmarketplace/nettsite/wpmp_payment_notification.php on line 12
Notice: Undefined index: action in /wpmarketplace/wpmarketplace.php on line 834
Notice: Undefined index: action in /wpmarketplace/libs/cart.php on line 357
Notice: Undefined index: add_to_cart in /wpmarketplace/libs/cart.php on line 44
Notice: Undefined index: task in /wpmarketplace/wpmarketplace.php on line 851
Notice: Undefined index: withdraw in /wpmarketplace/libs/functions.php on line 90
Notice: Undefined index: task in /wpmarketplace/libs/print_invoice.php on line 3
Notice: Undefined index: rate in /wpmarketplace/modules/rating.php on line 111
Notice: Undefined index: checkout_register in /wpmarketplace/wpmarketplace.php on line 634
Notice: Undefined index: register_form in /wpmarketplace/wpmarketplace.php on line 634
Notice: Undefined index: checkout_login in /wpmarketplace/wpmarketplace.php on line 605
Notice: Undefined index: login_form in /wpmarketplace/wpmarketplace.php on line 605
Notice: Undefined index: __product_wpmp in /wpmarketplace/libs/functions.php on line 26

http://wordpress.org/extend/plugins/wpmarketplace/