Secure Payment Page, Error initialising request

[Guest rlebbe1]

Hi,

I am using cube cart v 2.0.7 on www.cleanplus.com/shop. I have one of my clients receiving the following, when I contacted worldpay(my payment gateway) he told me to make my currency uppercase instead of lower case. i.e USD. Can you tell me how do i do this? or is there another workaround to get this issue solved.

Thank you and here is the message.

Secure Payment Page

Sorry, there was an error in processing this transaction:

Error initialising request:

The information sent from the merchant's site is invalid or incomplete. The transaction cannot be processed due to the following:

the currency or amount is not recognised Please return to the merchant's site try again. If the problem persists contact the merchant.

Server information 16/May/2008 13:05:15 Server ID mg1imspsp1 (WPReq-1368328)

I appreciate anybody's help as no orders can be placed until I rectify this, thank you.