tweak to the new fopen mode constant names
diff --git a/system/libraries/Email.php b/system/libraries/Email.php
index d71f593..e0fa689 100644
--- a/system/libraries/Email.php
+++ b/system/libraries/Email.php
@@ -1070,7 +1070,7 @@
 			$attachment[$z++] = $h;

 			$file = filesize($filename) +1;

 			

-			if (! $fp = fopen($filename, FOPEN_READ_BOF))

+			if (! $fp = fopen($filename, FOPEN_READ))

 			{

 				$this->_set_error_message('email_attachment_unreadable', $filename);

 				return FALSE;