Some users were having problems with v4.3.0 where X-Plane was throwing warnings on startup complaining of missing textures.
This was down to some DDS textures that, although valid, were not recognised by X-Plane for some reason. The troublemaker textures have been re-made and there’s a new 4.3.1 release out.
Just re-run your installer to fix the textures. Or if you’ve deleted the installer, download a new one from www.opensceneryx.com