Index: path_redirect.module
===================================================================
--- path_redirect.module	(revision 9)
+++ path_redirect.module	(working copy)
@@ -476,6 +476,11 @@
   static $schema;
   if (!isset($schema)) {
     $schema = drupal_get_schema('path_redirect');
+    if (empty($schema)) {
+      module_load_include('install', 'path_redirect');
+      $schema = path_redirect_schema();
+      $schema = $schema['path_redirect'];
+    }
   }
 
   if ($rids) {