Sure!

My world is:
http://www.kitely.com/virtual-world/Jus ... th/Eridani

Thanks! I'll try that...

Thanks for the suggestion! It didn't help, but I suspect that the problem involves bugs in Kokua's ability to upload models. Some perfectly-good models become a random jumble of textures and shapes after I upload them. In this case, the model looks good but has strange invisible boundaries --- some ...

I go to the Physics tab and one of the options is to upload a file. I choose the same file as the mesh I uploaded. Is there another way to do it?

I've had this problem too and using a collision mesh does not seem to be the solution --- at least with very large mesh objects (buildings, for instance). The new boundary is smaller than a big box around the object, but still extends a meter or more away from the mesh's surface. I considered making...