Index: includes/module.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/module.inc,v
retrieving revision 1.87
diff -u -r1.87 module.inc
--- includes/module.inc	5 Oct 2006 15:47:55 -0000	1.87
+++ includes/module.inc	12 Oct 2006 12:34:11 -0000
@@ -143,7 +143,7 @@
  */
 function _module_build_dependents($files) {
   foreach ($files as $filename => $file) {
-    if (is_array($file->info['dependencies'])) {
+    if (isset($file->info['dependencies']) && is_array($file->info['dependencies'])) {
       foreach ($file->info['dependencies'] as $dependency) {
         if (!empty($files[$dependency]) && is_array($files[$dependency]->info)) {
           if (!isset($files[$dependency]->info['dependents'])) {