SOLVED-Fatal error after Registration-checkout.php

Hello,

I am testing Hikashop at www.rpgtemple.com , the store is located at the RPGTienda button.

I activated Joomla Registration so the Hikashop registration also appears, and it seems to be working fine until I push the "Register" button.

Then it sends me to the following page:

Fatal error: Cannot pass parameter 2 by reference in /hermes/web09/b2289/as.blackcardinal/public_html/rpgtemple/components/com_hikashop/controllers/checkout.php on line 369

I checked the line and it featured this:

$registerData = $fieldClass->getInput('register',!@$this->cart_udpate);

I havent modified any other system file, apart from the language file, and I even tried by returning to that language file.

What could be the error?

Hello Nicolas,

It worked beautifully, thank you very much, you have an incredible service.