$_FILES Array getting empty when using $this->form_validation->run()

What's the value and the type of the variable $inserted_id.
Chage your function into your model:

PHP Code:

function addNewProperty($propertyInfo)
      {
          $this->db->trans_start();
          $this->db->insert('tbl_properties', $propertyInfo);

          $insert_id = $this->db->insert_id();

          $this->db->trans_complete();

          var_dump($insert_id);
die();
      } 


post the result

Its integer value.