Unity glass shader causing meshes to disappear

Hi, I’m using the glass shader from the Unity Pro version. But when certain meshes move behind the glass layer, they disappear. Sometimes they appear again for a brief moment, but then disappear once again as the mesh continues to move.

It’s extremely frustrating. Why is this happening? Thank you.

FIGURED IT OUT!

Just in case anyone else runs into this, I had textures applied to the color & transparency material attributes in Maya, removing both of these fixed the problem.