The Zip class now exits within download().
diff --git a/system/libraries/Zip.php b/system/libraries/Zip.php
index a3d42f3..fab8e7f 100644
--- a/system/libraries/Zip.php
+++ b/system/libraries/Zip.php
@@ -351,7 +351,7 @@
 			header("Content-Length: ".strlen($this->get_zip()));

 		}

 	

-		echo $this->get_zip();

+		exit($this->get_zip());

 	}

 

 	// --------------------------------------------------------------------