This has to be really basic;
When making a button in PayPal ( by going to 'cart' ,'appearance' and then 'use your own button image') using my own button image I get a message "custom image url : You have entered an invalid URL...."


What's a 'invalid' custom image URL? What's an valid one? Does it have to start with http:// ? How do I save the button image or do I have
to publish it first to have a valid URL ?

Thanks

multitaskinman