Unable to add "Automotive Materials" to project

Hi all,
I am on a mac, using unreal4.24.3
i found the EpicGames free asset Automotive material on the marketplace.
But there is only the button “Add to project” that does nothing.
Whats the problem ? XD

usually i am on a windows machine, so i am a bit lost !

Try generating a new project from the vault asset. Open that up, select the automotive materials directory and migrate to your target project. That’s what I ended up doing. Not ideal, but it works.