Hi,
When you have a lot of images to resize and these images are big, it will use some memory that we can't control because it is managed by PHP GD.
As you can see in your screenshot, it try to allocate 44MB and it overpass the limitation of 128MB
It is a little bit logical that the memory limit is reach if only one single image ask for so many memory (because it should be a very big image).
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.