Index: branches/version-2_12-dev/html/install/index.php
===================================================================
--- branches/version-2_12-dev/html/install/index.php	(revision 21465)
+++ branches/version-2_12-dev/html/install/index.php	(revision 21474)
@@ -28,5 +28,7 @@
 define('INSTALL_FUNCTION', true);
 define("INSTALL_INFO_URL", "http://www.ec-cube.net/install_info/index.php");
-while (@ob_end_flush());
+while (ob_get_level() >= 1) {
+    ob_end_clean();
+}
 require_once HTML_REALDIR . HTML2DATA_DIR . 'require_base.php';
 ob_start();