I have created a custom user profile field that I use on the signup form.
I have the edit_field_add() function that displays the field, and the edit_validate_field() function, which I am supposed to use to validate the field input upon form submitted.
The validation works when a user updates his profile. But the validation function does not get called when a new user signs up.
How does one do server validation on a user profile field when a user signs up?