I am having the same problem (see e-mail from my buyer below)
I'm trying to pay you through Pay Pal, but, as is often the case, the Auctiva Checkout software hangs; I hit the "next" button, the blue bar bottom left fills up, the window says "done" but the screen does not change. I minimize the window to see if the next screen has been opened behind the first, but it's not there. If you will give me your Pay Pal e-mail address I'll just tell Pay Pal to send you the money.
WHat do we do now? I have never had this problem before, have sold lots of stuff listed on Auctiva and the payments usually go thru with no problem. HELP!!!