We have a published game and were upgrading our project from unity 5.6 to 2017.3. we keep getting the following error causing the build to fail.
Assertion failed: Property (_Gloss) already exists. Use SetTexture instead.
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)
The build logs are useless as they give us no further info about where this component is to investigage further. This is a very large project so this is now a needle in a haystack. Has anyone else came across this ?