Index: signup_multiple.module
===================================================================
--- signup_multiple.module	(revision 11798)
+++ signup_multiple.module	(working copy)
@@ -119,11 +119,13 @@
     else { //$form_id == 'signup_edit_form'
       $nid = $form['#signup']->nid;
     }
+
+    $node = node_load($nid);
     
     #drupal_set_message("nid: " . $nid);
     #drupal_set_message("<pre>" . print_r($form, 1) . "</pre>");
     //check for future occurrences
-    $seqid = node_repeat_get_node_sequence_id($nid);
+    $seqid = node_repeat_get_node_sequence_id($node);
     if ($seqid !== FALSE) {
       $seqnids = node_repeat_get_seq_nids($seqid); //get all nodes in the sequence
       //get the nodes in the sequence after this node (if any)