Hi,
Thanks for the precision and the information.
Because the "filter.php" changed in the version, the line "46" might be different or could have moved.
That's why it is important to know the precise version of the file (or having the line content). Just the line won't be precise enough to find the problem.
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.