Have researched this problem and can't find a solution for Wordpress 3.7.1 running as a single site.
Problem: Allow a user to register on the site and ignore the error WP throws back if email is already registered - "This email is already registered, please choose another one."
Have tried writing my own plugin, something in the way of
if($errors['field'.$field->id] == 'This email is already registered, please choose another one.') unset($errors['field'.$field->id]);
Any help on this would be greatly appreciated.
i) I know its not ideal to allow same email for registration but can't see another solution to allow same family members to register under different usernames but same family email.
ii) The answer on a previous question did not work on single site, using the code
this is why I had to ask this question for single site solution.