Hi,
I think that you should use an old version of HikaShop with a recent version of Joomla 3.
In that case the best will be to update in order to have latest fixes for Joomla 3.3/3.4
Otherwise you have to change the order status directly in the order display and not in the order listing.
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.