Index: branches/version-2_4-dev/data/class/SC_Initial.php
===================================================================
--- branches/version-2_4-dev/data/class/SC_Initial.php	(revision 18504)
+++ branches/version-2_4-dev/data/class/SC_Initial.php	(revision 18505)
@@ -161,5 +161,5 @@
             } else {
                 $encoding = mb_detect_encoding($val);
-                if (CHAR_CODE != $encoding) {
+                if ($encoding !== false && $encoding != CHAR_CODE) {
                     $arrResult[$key] = mb_convert_encoding($val, CHAR_CODE, $encoding);
                 } else {