added killing of nulls to _prep_quoted_printable()
diff --git a/system/libraries/Email.php b/system/libraries/Email.php
index ee3d763..b0d9f12 100644
--- a/system/libraries/Email.php
+++ b/system/libraries/Email.php
@@ -1162,7 +1162,10 @@
 

 		// Reduce multiple spaces

 		$str = preg_replace("| +|", " ", $str);

-

+		

+		// kill nulls

+		$str = preg_replace('/\x00+/', '', $str);

+		

 		// Standardize newlines

 		if (strpos($str, "\r") !== FALSE)

 		{