discount problem when ot payment and coupon discount used together

[chikimato]

I used the contribution. Its nice.

But I have a total number calculation mistake when both the ot payment discount and coupon discount used together.

http://www.oscommerce.com/community/contri...ot_payment_v1.2

 

Both the coupon discount (for example: a fixed 10.00 discount is seen as 9.68) and the payment type discount (5% is less than 5%) is wrong.

 

Anybody experienced this problem.

Any solution?