Materials from 3.4 don't show in 3.6

Hi!
I have to do some changes in one project I made in V-ray for Rhino 3.4, but I installed newest update.
Now materials done in previous version just don’t show in assets editor nor in viewport.

Any ideas?
Greetings

Hello,
Has this occurred only with a single project? Are all materials affect?
Could you please use Extensions > V-Ray > Pack Project and send the archived file over to support@chaosgroup.com for investigation? If the project is too big, please use a file-sharing service of your choice.

Kind regards,
Peter

Same thing is happening to us. Any ideas/fixes?
We have about a hundred different projects that are affected, we cannot send you all those files…

Thanks,
Guido

Please share with us a single project exhibiting this issue. Use V-Ray > Pack Project to archive it into a single file. Be sure to let us know what is the date displayed in your V-Ray > Help > About V-Ray window.
Our dev team will investigate the file as soon as it is received.

Kind regards,
Peter