There is a bug right now with multiplayer. so im not sure. let me know if you figure anything out.

I tried and the editor worked and it still caused issues. Im going to check all my multiplayer settings, must be something with hosting in particular causing conflicts.

@major Tom Interesting, im not sure what it could be i use all vanilla parts. Could you open it in the editor? maybe rename it and save it?

I cant use your sub when hosting. The game menu is just left blank. Everything else works, I have this issue with only a few workshop subs.