I can use the USB tuner with its original software and it tuner into all channels fine. It's just when I use MP server it doesn't work.
Yep read that before, when you had the manufacturers software running, has that left any of their own tv services running which may interfere accessing the tuner.
Take it you are using the latest update for kworld tuner KWorld! Watch TV on Your PC NO.1!!, Lifeview seems to have dissappeared, so no updates available for them.