Hi,
You have to take a look at your PHP error log.
I guess that you had a problem with the database update and there is an SQL error.
You can also try to activate the Joomla debug mode in order to print more details in the page.
There is an option to change the PHP error reporting level, if you change it to a higher level, you will be able to see the PHP error message or the SQL error message.
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.