If you can't see who uploaded the Torrent, then it means the Torrent has been indexed from another site.
Normally when you find Torrents on KAT uploaded from members here you'll see this:
If you see something like this
Then it means that the torrent has been indexed from another site. To check the torrent at that respective site, click on the technical tab and beneath the Tracker you'll see were it has been indexed from.