I am placing an order in my own cart at www.nappyshoppe.com for an item I have bought for my own use.

I have a group discount that I and my staff get, and then I have a freeshipping coupon that I put in so I dont pay shipping.

All works well until I try to use my 5 buck gift certificate balance and then the math goes totally haywire.

Code:
Shopping Cart Contents
 Edit 

Qty. 	Item Name 	Total
1 x 	bumGenius Organic One-Size Cloth Diaper

    * Color: Grasshopper  $24.95 $24.95
Sub-Total:

$4.00
Per Unit (Best Way):

-$4.00
Discount Coupon: freeshipping01 :

-$7.49
Group Discount:

$1.44
TX TAX 8.25%:

-$5.00
Gift Certificates:

$26.36
Total:
Any clue as to what is going on? I have not played around with the code behind gift certs at all. Just going with the default installation on it.

Sharni