Is there something I’m doing wrong? I’m not really sure what to do. When I re-load the place in Studio, it gives me the same errors, yet I double-click the scripts and they open just fine.
Nope, you’re thinking of the module scripts you can require by ID.
Linked sources are scripts only usable in the game they were made in. They are uploaded as an asset, although they are used a little bit differently, at least on the front-end.
You don’t need to manually update them - and you can have multiple in your place, and editing one will update the others.