We have this error every time we add items to cart before we logged in as customer.
Notice: Undefined index: customerDefaultGroup in /var/www/....../50/955850fbfbe5eac30bfd4300c8f2e927b58836e2.file.product.tpl.php on line 741 Notice: Trying to get property of non-object in /var/www/....../50/955850fbfbe5eac30bfd4300c8f2e927b58836e2.file.product.tpl.php on line 741
But after I logged in as customer, the error will be gone. I know it is related to customer default group as we did add wholesale customer group.
But I am not sure where I can look into. Any ideas?