Problem with Custom Animation in UDK

I'm having some problems implementing a test walk cycle taken from my motion capture session which works fine on the character in maya and in the animset viewer but does not work in-game, i've been following this tutorial which is suppose to work but doesn't as you can see on the pic below, that is what happens on every try, the character just floats around, this might be because the animation is MoCap and not traditional anim..