Hi Eric,
I'm sorry to hear about the trouble you are having. Ebay will actually reject listings and return that error if the word "money order" is mentioned anywhere in the item description of payment instructions, so I suspect you have alluded to the term "money order" somewhere else in the auction.
If you are unable to see what part of your listing is causing this error to be returned, I recommend contacting our customer support team using the web form on the following page:
http://www.auctiva.com/free-au...tware-help/help.aspx-Mike