Hi,
Sorry ; I updated the package this morning for a fix and I forgot to remove the new plugin I'm currently developing.
Please re-download the hikaserial package, I fixed it.
You can also remove the folder "home/shann1/public_html/administrator/components/com_hikaserial/extensions/plg_hikashop_serial_per_order/" from your server.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.