Paypal sends me to checkout payment not confirmation

[voltage]

I am setting up PayPal Website Payments Pro and PayPal Express Checkout for the first time and am running into the following problem. I go from the shopping cart to paypal, choose no account, enter payment and billing info, confirm, and then it takes me to the Payment Checkout page and not the Checkout Success page. It created a new customer account on the website when paypal redirected me, but it did not submit the order.

Has anybody seen this happen? Any thoughts?

Thanks

[voltage]

Appears that the problem is fixed.

It helps to follow the instructions.
http://www.zen-cart.com/wiki/index.php/PayPal