Hi,
During the trigger "onAfterProductCreate", the image are not already saved in the database.
You can perform a "var_dump" of the product $element and see his full content.
And you will find the images under :
But, like I just wrote, the images won't be yet in the database, that process will be done just after the trigger.
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.