How was it used? Meaning, my guess is that the files were indeed extracted, but to a location that you weren't expecting. If you can see the information (what files were extracted), do a file search on your computer to find those files. Chances are that it's just simply some poor file placement (or bad syntax, but those programs are fairly easy to use, so I find that unlikely).
Sorry I couldn't be of more help, but there's my guess. Mouser X over and out.