Unable to save new material in library

[Delphino]

Hi, I'm very new user of V-ray. I have R6 + VfR3.6 for few days. (using Rhinoceros from R3, but Vray for first time)
And now i have to do new libraries of models and materials. And I have problem with saving new materials. When I wanna save in "deafult" folder in C:/programfiles/chaosgroup/... it wrote me "You have no permission to do it" And I need solve it. It's not as V-ray problem as problem in setting pc, but i don't know where I shoud to do it.
And when I save material in D: disc and move it to C: (thats possible, when I confirm to do it as a administrator) this material have changed ways to maps and it's usless.

[Delphino]

Solved - I need open Rhino 6 "as administrator" by right mousse button....

[Peter.Chaushev]

Hello,

Please keep in mind saving additional materials in the location of the preset material library is not recommended. Your materials may be removed upon updating/uninstalling V-Ray.
There are plans to improve the Asset Editor's Material Library by adding options for personalization. But for now, keep your own material libraries in a separate location.

Kind regards,
Peter