Hi,
We fixed some this problem in the latest HikaMarket build end of August.
There are several modifications in the view and in the controller ; all will be available in the next release.
If it is generating you some troubles to delete correctly a vendor, please let me know.
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.