OgreBullet basic question

Hello,
I m using OgreBullet for the first time. I created various collisionshapes and that works fine. But I want these shape objects to fall on a box. I created a ogre mesh for the box. What happens is these shape objects justs fall through the box. What do I need to do for these shapes to stay in the box instead of falling through.

Thanks,
Bharani

Are you creating a collision shape for the box? Are the various collision shapes greater than 0.05 units in size? There is some good information here: http://www.bulletphysics.com/mediawiki- ... umentation

-Fish