In my magento website, "Guest Checkout" is disabled. People need to register while they checkout. This works fine, as it is a default behaviour. But sometimes, people who register are not really registered, but considered as Guest.
This happens randomly. I don't have any idea what is going wrong. Can anyone help please?
The website uses the default onepage checkout with minor modifications only in templates (jQuery additions for some attractive UI).
the output of running SELECT * FROM customer_group is:
running SELECT * FROM core_config_data WHERE path = 'customer/create_account/default_group' returned empty set.