[micheal332001]

Have re-uploaded all files for version 1.1.4 and these have been tested and are working right.
As for paypal sending back to the gateway i cannot test this but if you are having this error with the coupons please remove this line of code from the cart_gateway.php file

line no: 76

PHP Code:

$db->query_write("UPDATE ".TABLE_PREFIX."microcart_usercoupon SET valid=0 WHERE userid=".$user['userid']);