Index: modules/system.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/system.module,v
retrieving revision 1.212
diff -u -r1.212 system.module
--- modules/system.module	25 May 2005 06:03:17 -0000	1.212
+++ modules/system.module	27 May 2005 13:08:25 -0000
@@ -716,8 +716,11 @@
 
     // Toggle node display.
     $group = '';
-    foreach (node_list() as $type) {
-      $group .= form_checkbox(node_invoke($type, 'node_name'), "$var][toggle_node_info_$type", 1, $settings["toggle_node_info_$type"]);
+    $node_list = module_invoke('node', 'list');
+    if ($node_list) {
+      foreach ($node_list as $type) {
+        $group .= form_checkbox(node_invoke($type, 'node_name'), "$var][toggle_node_info_$type", 1, $settings["toggle_node_info_$type"]);
+      }
     }
     $form .= form_group(t('Display post information on'), $group, t('Enable or disable the "submitted by Username on date" text when displaying posts of the above type'));
   }