Index: /branches/version-2_12-dev/data/class/helper/SC_Helper_HandleError.php
===================================================================
--- /branches/version-2_12-dev/data/class/helper/SC_Helper_HandleError.php	(revision 21927)
+++ /branches/version-2_12-dev/data/class/helper/SC_Helper_HandleError.php	(revision 22127)
@@ -48,5 +48,5 @@
         error_reporting(E_ALL & ~E_NOTICE & ~E_USER_NOTICE & ~E_DEPRECATED & ~E_STRICT);
 
-        if (!defined('SAFE') || SAFE !== true || !defined('INSTALL_FUNCTION') || INSTALL_FUNCTION !== true) {
+        if (!(defined('SAFE') && SAFE === true) && !(defined('INSTALL_FUNCTION') && INSTALL_FUNCTION === true)) {
 
             // E_USER_ERROR または警告を捕捉した場合のエラーハンドラ