Same error message for 30 listings! Try this go to the saved listings. Look up at the top and to the far right you will see a button to capture the HTML for each listing. Click that and a window will come up that you can "select all" (this will take the pics, text, and templates). Then go to Ebay and post your listing. It will look just like an Auctiva listing. I did this and used the identical Title Listing (just in case it was over the character limit or Ebay found fault with it) and Ebay accepted my listing. After one week, Auctiva still dosen't know what the problem is. I ended up going back and doing this for half of those listings. I tried to post the half recently and same API error message. Looks like I will have to post them all with cut and past.