Index: branches/RC/core/kernel/utility/multibyte.php
===================================================================
diff -u -r10123 -r10670
--- branches/RC/core/kernel/utility/multibyte.php	(.../multibyte.php)	(revision 10123)
+++ branches/RC/core/kernel/utility/multibyte.php	(.../multibyte.php)	(revision 10670)
@@ -5,6 +5,11 @@
 
 		}
 
+		function mb_convert_encoding($str, $to_encoding, $from_encoding = null)
+		{
+			return $str;
+		}
+
 		// substr|substr_count|strtoupper|strtolower|strstr|strrpos|strpos|strlen
 
 		function mb_substr ($str, $start, $length = null, $encoding = null)