Vault Content: Can't create project

Hi, I recently downloaded the ‘Retro Office Environment’ from the marketplace (compatible with 4.7 and 4.8). I’m using version 4.8.1.

The scene is showing up in the vault, but I don’t have the option to ‘create project’, although I can ‘add to project’ and that appear to be doing nothing for me.

What’s strange is that I’m not having any problems with the other environments in my vault.