Hi,
The documentation page give a modification in order to have more details about the element which can't be copied.
Thanks to it, you will know the element which generate the problem and you will be able to fix it by changing the write permission on the specific file/folder.
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.