Tax Zone-Save and New-403 error

Hi,

Could you try to turn on the debug mode of the joomla configuration and try again ?
That should hopefully display an error with more information.

Please change the line:

var $modify = array('apply','save','store','orderdown','orderup','saveorder','savechild','toggle','copy');

to:
var $modify = array('apply','save','save2new','store','orderdown','orderup','saveorder','savechild','toggle','copy');

in the file administrator/components/com_hikashop/controllers/zone.php and that will work.