When you view the mesh in the editor preview (double click it in the content browser) do you have more than one material slot by any chance? Also, could you post a screenshot with normals (button in the toolbar) showing.
I’m trying to import some props I made into Unreal, but for some reason the material I use shows displays as a solid red color in the viewport. The material works normally on other models, but only displays red on my model. I’ve even imported them into a new project file and it still gave me the same result.
This is a material that is used on many different objects, and it looks normal in the material editor. But only displays like this on my model.