? sites/default/files
? sites/default/settings.php
Index: includes/bootstrap.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/bootstrap.inc,v
retrieving revision 1.257
diff -u -p -r1.257 bootstrap.inc
--- includes/bootstrap.inc	3 Dec 2008 14:51:53 -0000	1.257
+++ includes/bootstrap.inc	20 Dec 2008 14:42:47 -0000
@@ -1355,9 +1355,11 @@ function drupal_get_schema($table = NULL
       // Invoke hook_schema for all modules.
       foreach (module_implements('schema') as $module) {
         $current = module_invoke($module, 'schema');
-        require_once DRUPAL_ROOT . '/includes/common.inc';
-        if (drupal_function_exists('_drupal_initialize_schema')) {
-          _drupal_initialize_schema($module, $current);
+        if (is_array($current) && count($current >= 1)) {
+          require_once DRUPAL_ROOT . '/includes/common.inc';
+          if (drupal_function_exists('_drupal_initialize_schema')) {
+            _drupal_initialize_schema($module, $current);
+          }
         }
 
         $schema = array_merge($schema, $current);