// TRANS: Form validation error displayed when trying to register with an invalid nickname.
$this->showForm(_('Not a valid nickname.'));
} else if ($this->emailExists($email)) {
+ // TRANS: Form validation error displayed when trying to register with an already registered e-mail address.
$this->showForm(_('Email address already exists.'));
} else if (!is_null($homepage) && (strlen($homepage) > 0) &&
!Validate::uri($homepage,