Ralph not Moving

Ok i created my own world using the 3D Studio Max 2009.
I used a normal plain and then added a a start_point.
That works perfectly now but i only got one problem now.

Ralph wont move any more?
He stands on one place(his animation is working perfectly). :angry:

Any help regarding this issue would be a help for me.

THANKS!

Have you added:
{ Polyset keep descend }
to your terrain?

uhm no.
but where exactly should that come?
i added it to the terrain but then the load crashed.

ok thanks it works!