If it had worked with the leanto it would have worked with the other meshes too. you can open the .material files and get the codes needed to fix the textures from those files. It's not a on-mesh fix. it applies to all meshes.
Anyway, if it didn't work I'm inclined to say the downloads were corrupted or there is a spelling error when you attempted typing the material name in. Feralheart is very case-sensitive.
I'll look into a downloadable 'fix' tomorrow.
