Here\'s my controller code to configure the rules:
// Previous address(es)
$this->form_validation->set_rules(\'prev_house_number[]\', \'Hou
It looks like this is the commit that Phil is talking about: https://github.com/EllisLab/CodeIgniter/commit/5c561805bd9ae6a4ad5d202277c34a879617b683#system/libraries/Form_validation.php
Try pulling the code from the develop branch for the form validation library and see if it takes care of the issue.