Someone else had a simular problem to this, but I'm getting different messages. If I use check out with paypal I either get 'internal server error' or paypal gives me a 10002 message. Something to do with the incryption between my web site and paypal. If I use checkout I get the 404 message or the 10002. I'm new to this business and If the problem is in the preferences>host settings, can anyone tell which ones should match or what they should look like. I have never touched these settings, they were all put there by my host. I have a secure ssl and I have added the credentials created by paypal to my shopsite payment page. Customers can add a product, they just can't pay for it. my site is queenofangelsjax.com