This is why I recomended formating the card. If the card is currently seen as un-formatted, the machine will not even recognize that it is plugged in and the recovery software will not do anything. As I mentioned, a format is a last ditch activity. At least it can recover the card to a point where it becomes readable. Then you can try to recover. Sometimes it works and you'll get the images back and sometimes it doesn't. Do this when all else has failed. Once formatted there is no way to go back.
Which is why I recommended the Testdisk / Photorec suite. They are able to bypass the partition table and grab the data directly, no formatting required.