You need to delete the http:// in the box before you paste the URL that also contains the HTTP://.

Here is what you have in the field:
http://http//search.ebay.com/_W0QQsassZmun3335QQhtZ-1

All you need to do is delete the beginning http:// and insert a ":" between the second "http" and the "//" so it reads:

http://search.ebay.com/_W0QQsassZmun3335QQhtZ-1

Once you get it right it will stay there until you delete it and will alway list your current auctions.