Problem with corona materials

Hello

I have a problem when working with corona materials from the library, I have the Corona Renderer V6. I add the materials to an object, after a while the material changed, and I have to add it again.
The color change, the mapping change, I don´t understand, I have the double of the work checking all the objects before I start rendering.

Hope someone can help me with this problem.

Thanks in advance

That sounds very odd. I’d suggest to install latest security tools from Autodesk and check if your max files aren’t infected by virus.

Thanks

I will try that.

And I will let you know.

Thanks again

Can you please specify which materials exactly from CoronaMaterial library?

Hello

Especially the wood section.

Thanks in advance