Yes I am having a similar problem. What I have done to allow my listings to save is to erase my payment instructions. The items will still post to Ebay without it. I post to Ebay and then I go straight to the edit item on the listing. I have added my payment instructions to EBay's drop down template area. When I go to edit item I just grab my payment instructions from the drop down, add them to my listing and then repost the editted listing. It is more work but at least you will be able to list your items until Auctiva fixes the problem..