Most often, this is due to a software idiosyncrasy that we are working on fixing. When you click the attach button, it adds it to the"queue" to be uploaded. After you have "attached" all of your images (up to 6), you must click the UPLOAD button. This will upload all of your images at one time, and the page will refresh brining you back to the top. From this point, you can continue editing your auction for display.

If you find that you completed your listing and it has already posted, you can always edit the details of the auction afterwards to add the pictures