objectRadius = Geometry.ComputeBoundingSphere(vertexData, m.NumberVertices, m.NumberBytesPerVertex, objectCenter)everything worked great.
BUT, I found that only the meshes that are exported with KW X-port plugin from 3Ds max have this problem. PandaExporter plugin seems to work well with this but unfortunately it doesn't export tangets, so I can't use it.
Thanks for the help.

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