This error occurs during registration when approval required and confirmation email are selected. Has anyone experienced this error or is it a fault with my installation. SS3.1. Thanks. PS Fault appears to be intermittent.

[User Error] Uncaught Exception: Object->__call(): the method 'datafieldbyname' does not exist on 'Form'

741 default :
742 throw new Exception (
743 "Object->__call(): extra method $method is invalid on $this->class:"
744 . var_export($config, true)
745 );
746 }
747 } else {
748 // Please do not change the exception code number below.
749 $class = get_class($this);
750 throw new Exception("Object->__call(): the method '$method' does not exist on '$class'", 2175);
751 }
752 }

I seem to get an error like this when I attempt to use an email address that is already used. SS3.1

Try

$form->Fields()->dataFieldByName()