Ticket #12425: 12425.diff

wp-includes/default-constants.php

@@ -288 +288 @@
          * Will be used as the fallback if the current theme doesn't exist.
          * @since 3.0.0
          */
-        define( 'WP_FALLBACK_THEME', 'twentyten' );
+        if ( !defined('WP_FALLBACK_THEME') )
+                define( 'WP_FALLBACK_THEME', 'twentyten' );
 }
 
 ?>