We are also having this issue with vray 5 hotfix 1 on 3ds Max 2021. Switching to max default one over max.vray fixes the problem for now with UVW editor crashing, but really annoying not having vray materials present in material editor.. I hope this can be fixed in next hotfix.
Hi, this issue should be fixed in some future 3ds Max update/release.
Best regards,
Alexander
As an update, I ran into this problem just now with V-Ray 5 hotfix 2 and Max 2021.2
The .ini fix still works, but it’s annoying!
It is indeed, unfortunately it’s down to AD to modify their own code: there is nothing we can do on our side.
this worked for me- https://www.youtube.com/watch?v=H\_ijkxXt-KQ&feature=youtu.be
2021 Update 3 should resolve this when it comes out.