Index: branches/dev/data/class/GC_SendMail.php
===================================================================
--- branches/dev/data/class/GC_SendMail.php	(revision 336)
+++ branches/dev/data/class/GC_SendMail.php	(revision 338)
@@ -66,5 +66,5 @@
 			
 		$this->to			 = $to;
-		$this->subject		 = $subject;
+		$this->subject		 = mb_encode_mimeheader($subject);
 		$this->body			 = mb_convert_encoding( $body, "JIS", CHAR_CODE);
 		$this->header		 = "Mime-Version: 1.0\n";