Model Importer fbm folder is still created

Questions & Answers
1

Hi,
I dont want Unity to import the materials from fbx models, so I created an input override class:

using UnityEditor;

public class ModelImportOverride : AssetPostprocessor
{
    void OnPreprocessModel()
    {
        ModelImporter importer = assetImporter as ModelImporter;
        string name = importer.assetPath.ToLower();
        if (name.Substring(name.Length - 4, 4) == ".fbx")
        {
            importer.importMaterials = false;
            importer.globalScale = 1;
            importer.animationType = ModelImporterAnimationType.Legacy;
        }
    }
}

The materials arent imported, but the fbm folder is still created (empty). How can I fix this?
I already tried this:

void OnPostProcessModel()
	{
		ModelImporter importer = assetImporter as ModelImporter;
		Directory.Delete(importer.assetPath.Substring(0, importer.assetPath.Length - 4) + ".fbm");
	}

but that didnt work either.

2

It is possible that you still have the meta file of the folder so Unity recreates it every time it gets removed.