Can't see my vfb rendering and the shader on material editor

[mik]

Hello
I have a very big problem! I can't see my VFB rendering but I can see my rendering with the 3dsmax frame buffer
I also can't see my shaderball in the Material Editor in scanline and vray renderer. all the viewports are blank.

I made a repair of 3Dsmax update my Nvidia Drivers and reinstall Vray but it still does not work

Do you have an idea? I can not work without it

I am running Windows 10 pro 64 bit
3Dsmax 2018.4 Update 20.0 - 20.4.0.4254
Vray Next update 1
2 Geforce 1080 Ti drivers: 417.71

Please help me

Thanks a lot for your help

Best regards

ps : sorry for my english

[DanSHP]

Is this because standard materials no longer work with Vray next?

[matanov]

Have you tried with other 3ds Max versions?

[mik]

Hello,
Thanks for your reply
Everything works perfectly

I had posted this question on the Autodesk forum also and the technical support asked me to delete the preference file (C: \ Users \ <username> \ AppData \ Local \ Autodesk \ 3dsMax \ 20XX - 64bit \ ENU)
For info I had installed 3dsmax 2019 and everything is working properly

[matanov]

Great! Thanks for the follow up.