Hi,
It was a bug from the Packager, please re-download the last version of HikaSerial or open the file "public_html/media/com_hikaserial/mail/pack_quantity_low.html.php" and remove the "*/" on line 12.
The packager has been fixed yesterday so new packages won't have such problem.
Thanks for the report.
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.