physics object inside another physics object

My goal is to get an object to roll around inside of another object using the physics engine. I created a sphere in blender and put a box and another sphere inside, but when I run it, it just disappears or isn't there. I can make them separated just fine and they move just fine. Is there something special I might not be doing right, or can someone point me in the right direction Thank You!

Test your scene in the blender game engine first... that should give you a good idea how its going to look like in SIO2...

I got it to work in blender, I have balls inside other balls and it works just fine, but when I export it and run it in sio2, the objects inside just fall right through. Any ideas?

Reset the transformation?

sio2interactive wrote:Reset the transformation?

I reset it and it still just falls through. Is this even possible, or am I just doing it wrong?

Watch tutorial06... in there I give all the info (well almost...) there is to know about SIO2 & Bullet integration using Blender.