My model has a problem

[Wandering Soul]

I've been making this model just recently...
It's a Bandit with a Crossbow...
I've finish animating it and tried testing it in-game...
But during the world editor phase, the model file cannot be read or visible...
Is there a way to identify and fix the problem... Or must I remake the model...
If anyone can fix this model of mine, please let me know...
The model in question is attached below...

UPDATE :
06-May-2012 : Never mind, I found and fixed the problem already...