Strange model bug

First i have made a dog model in sculptris . Than i exported it to obj and imported it in MED. After that i scaled it down and textured it. In MED the model looked normal but after adding it in WED i get this strange bug :

I can see the feet of the model throug the head.
Can anybody help me ?
How can i solve that problem?


Edit: Problem solve

I now use a .jpg texture instead of a .png and it works

The problem was probably that transparency was set in MED: Object -> Manage Skins -> Skin Settings -> Texture -> Texture Format -> 24bit (36bit means transparency)

It was not the problem that it has been a png.

You shouldn't use jpg for texture, use one of the other proper formats instead (see manual).
The "problem" you've encountered with png is its alpha channel, either change the png from 32bit to 24bit or make sure you render the model in solid mode (right now it is rendered in the transparency pass).

Man.
Go to MED click on cobjects->Skin Editor and put all textures to 24 bit. Thats all

Thanks for that useful information