u/chicagoboom4

When I started creating walls in Revit 2027, I noticed that most of the materials in the library have this error: “For improved rendering, replace the current appearance asset in this material with a newer version.” They don’t render at all in 3D—I only see gray walls. I tried replacing them in the Material Manager, but the same error appears there, and some concrete materials are missing entirely. What should I do? I have to turn in my project on October 6, and Revit isn’t working properly for me.