[Plugin: Invitation Code Checker] Works when making user accounts only

I feel stupid . . .

Compatible up to: WordPress MU 2.8.4

I am using 3.01

duh

I need it to work with a site where only user signups are allowed so whats the status? is it dead? will it be updated?

Besides, if I create a new user from the back end as a site admin it doesn’t offer a box for an invite code but stops me from creating an user!

The plugin doesn’t work (I’m using WP 2.8.6) because the invitation code isn’t passed as a field in the second form at registration. This can easily be done:

1. In the initialization routine, add
   add_action( 'signup_hidden_fields', array( &$this, 'add_hidden_field_to_signup' ) );
2. Add the following function:

   function add_hidden_field_to_signup( $errors ) {
   	?>
   		<input type="hidden" name="invitation_code" value="<?php echo wp_specialchars( $_POST['invitation_code'], 1 ) ?>" />
   	<?php }