When you are creating a scenario and you click on the object set filter it shows what you have in your collection I have removed a number of items from my Kuju collection - mainly reskins and locos/Stock in the UKTS Freeware packs - prefixed by FP when you go to select some things. Some of these still appear even though I have removed them - how do I fix that? Thanks Peter
Locate and delete their Preload blueprints. As long as there's a preload, the stock will be in the list, though you can't actually place it down anymore.
And don't forget to clear the cache (or just delete the blueprints.pak from the affected folder) after removing files.