Hi,
It is not related to HikaSerial but to HikaShop ; it is HikaShop which provide the library :
The function "oNamebox.prototype.get" is right defined in the "otree.js" file in HikaShop 2.6.0.
.
Because we can't reproduce the issue locally or in the demo website ; it will be difficult for us to create a fix.
So if you can provide us a temporally backend access to your website so we can take a look at the issue ; it will help a lot.
You can use the "contact us" form to send us such private information (with a link to that forum thread so the support team will assign me that ticket).
If you want access to HikaShop 1.9 package ; please also use the "contact us" form so we can send it to you.
Regards,