My client has a problem on this site http://www.smudge-dribble.com
The site uses SagePay for payment.
The ordering works ok EXCEPT when someone orders a product that has no tax e.g Nappies http://www.smudge-dribble.com/product/Huggies_Nappies_%E2%80%93_Size_3_HUG3 (most other items are taxable).
When one of the non-taxable products is ordered it gets the following message:
Status Detail: 3021 : The Basket format is invalid.
Form Transaction Error
This transaction attempt has …
