USPS Shipping giving an error for international shipments.

[bqheath]

Everytime a customer tries to checkout with an international address, USPS gives an error that the product exceeds the weight limit. The product is only 1 pound. Also I have tried upgrading from v3 to v4 and I still get an error that says I can't ship via USPS. All domestic orders haved worked fine with the USPS shipping module so I am confused as to what might be wrong?

[lowmips]

message me with the XML request and reply (paste in text document and add as attachment).  You'll need to have debug mode on...

-Reggie