3DS Max Sample Object

Does anyone know how Corona is overriding the default sample object environment in the material editors? I know the sample object has been broken in Max for the past several years.

I do not understand the question. Can you explain what is happening?

I am trying to figure out how Corona is able to override the default sample object in 3ds Max to have their own environment and backdrop with correct Corona materials. I thought the 3ds Max custom object was broke and I was not able to load my own shader ball.

There are options for that in Corona Settings, I belive there is a tutorial on YT

https://forum.corona-renderer.com/ Material previews with arbitrary shapes