Hi,
When Nicolas came to me with the bug, he mentioned the "datepicker" and not the "sales start/end".
So the hotfix I made for the custom fields is for sure not the same than the hotfix for the "sales start/end".
Package is NOW up to date for that issue.
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.