Sue,
You are missing the point. The dupes in the standard RTMM libraries are ok....no reason to delete them.
We are talking about libraries that you have active outside of the RTMM libraries that contain the same objects that the RTMM libraries contain. The duplicate would be outside of the RTMM libraries and most probably do not have exactly the same name as the RTMM libraries which all start with FSXP3D.
The black texture objects in your picture are supposed to be pulled from the FSXP3D airport_restaurants_ss.bgl library and the FSXP3D ez_uk buildings_v1.bgl library that are both contained in the EZ Scenery LibraryFSXP3D folder of RTMM libraries. However, that is not where you look for the problem.
You are probably getting black textures because the Sim is pulling the objects from another library, outside of RTMM, that contains the same objects but with an orphaned texture file. To find these, try doing a search for airport_restaurants_ss.bgl or ez_uk buildings_v1.bgl and see if any turn up without the FSXP3D prefix. Those are the names of the libraries as the existed in the old EZ Scenery Library files.
Remember, that the RTMM versions have a "FSXP3D" prefix. Most likely, you still have an old version of the EZ Scenery Library active that is no long tied to a texture file. Any old version of the EZ Scenery Library need to be removed.
Rod
