Irrlicht Engine

After some experiments I have managed to import the 3ds with its collision, but something strange happens. I am having culled collision.
The 3d program I use is blender, and when I make a cube I get trapped inside it instead of colliding with it.

Then some help would be appreciated on how to make the Demo "example" use instead of the bsp file a 3ds...

How can I load a 3DS model as IQ3LevelMesh so it can work as terrain collision?

more information please. What do you mean by multiply collision animator?

I mean that I would like to put two elipsoids as Collision Animators, but if you add a collision animator to sth that already has a collision animator the engine screws everything and the result is I am sinking slowly into ...

I was wondering if there is a fix to this problem, but anyway any other way of achieving the same result would do.

What I want is to make a climbing feature, so I added a collision animator in front of the old one, but then figured out that multiply collision animators will not work.

How can I ...

Well, I have been searching the fix to the problem with the collision of the camera, which stack on the roof.

I searched the forum a lot of times, but the only result I got was that there are quite a lot of threads fixing this problem, but I seem to be unable to find one.

I know a thing or two ...