Index: branches/version-2/data/class/pages/contact/LC_Page_Contact.php
===================================================================
--- branches/version-2/data/class/pages/contact/LC_Page_Contact.php	(revision 16741)
+++ branches/version-2/data/class/pages/contact/LC_Page_Contact.php	(revision 17041)
@@ -99,5 +99,6 @@
             // エラーチェック
             $this->arrForm = $_POST;
-            $this->arrForm['email'] = strtolower($_POST['email']);
+            $this->arrForm['email']   = isset($_POST['email']) ? strtolower($_POST['email']) : '';
+            $this->arrForm['email02'] = isset($_POST['email02']) ? strtolower($_POST['email02']) : '';
             $this->arrForm = $this->lfConvertParam($this->arrForm,$arrConvertColumn);
             $this->arrErr = $this->lfErrorCheck($this->arrForm);