Why can't meshes show up in my map....

[Keru]

I made a map with a friend, but when we check it out in cape, some meshes don't show up. Like ferns, den, waterfall, certain crystals, the normal rocks, and mushrooms.
How do we get them in game? Please help it's really confusing and this is my first proper map I'm doing.

[Zaephyr]

This has happened to me before, what I suggest doing first is exporting the map, this usually fixes it.

If not, go to FeralHeart>Media>Objects and rename all of the object groups with My in them.