Deleting Custom field gives SQL Error front end

-- HikaShop version -- : Current
-- Joomla version -- : Current
-- Browser(s) name and version -- : Google
-- Error-message(debug-mod must be tuned on) -- : 1054Unknown column 'about' in 'field list' SQL=UPDATE `jos_hikamarket_vendor` SET `vendor_name`='W. Iamwe Ph.D.',`vendor_email`='****@advancn.org',`vendor_image`='vendor2/penbyte-vendor.png',`vendor_params`='O:8:\"stdClass\":3:{s:21:\"invoice_number_format\";s:16:\"{automatic_code}\";s:12:\"paypal_email\"

This is the Second time i have received this error, the first time i just reinstalled Hika Market, and everything was fixed. But, after deleting a second custom field I received another error.