Index: quiz.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/quiz/quiz.module,v
retrieving revision 1.117
diff -u -r1.117 quiz.module
--- quiz.module	10 Dec 2007 04:01:12 -0000	1.117
+++ quiz.module	10 Dec 2007 23:00:29 -0000
@@ -655,8 +655,9 @@
 function quiz_delete($node) {
   // This first line should load all the vid's for the nid.
   db_query('DELETE FROM {quiz_node_properties} WHERE vid = %d AND nid = %d', $node->vid, $node->nid);
-  db_query('DELETE FROM {quiz_question_properties} WHERE nid = %d', $node->nid);
-  db_query('DELETE FROM {quiz_node_result_options} WHERE nid=%d', $node->nid);
+  db_query('DELETE FROM {quiz_node_relationship} WHERE parent_nid = %d', $node->nid);
+  db_query('DELETE FROM {quiz_node_results} WHERE vid = %d AND nid = %d', $node->vid, $node->nid);
+  db_query('DELETE FROM {quiz_node_result_options} WHERE vid = %d AND nid = %d', $node->vid, $node->nid);
 }
 
 /**