Paypal Link?

Hi, been trying to set up the payment settings, on a test profile I created,when I click the paypal button to upgrade to a full membership, the paypal page says "  The link you have used to enter the paypal system is invalid",,anyone know how I can fix this or what the problem may be?...Thanks

Got it, incase anyone is having the same problem, it was the "business name" field, it's not your business name but your paypal e-mail account.

Thanks for posting the answer as well. Most don't and their post helps no one in the end.