Hi there, I am at my wits end with this issue and I can't find a solution anywhere. I am using PHP to generate Add to Cart buttons for the products on my friend's website. We are using the secure merchant id (we think) and not the account email. but I get the error message: "PayPal cannot process this transaction because of a problem with the seller's website. Please contact the seller directly to resolve this problem." when trying to add to cart. Please refer to the following example and if you could tell me what (if anything) I'm missing in terms of the HTML. Otherwise could it be a setting in her paypal account that needs to be set correctly? http://www.karenrothwell.com/?product=mokume-gane-cufflinks Surely I'm missing something really obvious. Please help me fix this!
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