Mah objects are scared of meh.

[-Rapid-]

Ignore the random title. xD

So I'm making a custom map for a group... and so far so good I made a bunch of trees, rocks, plants, flarrrg you get it. But I also have a den. The den from Feral Heart. Den.mesh that you can upload on your own. I saved it in MyRocks because another cave mesh is in there. And I put it in my map. I saved the map. Come in game... everything else is there but the den. -.-' I exported the object, the map, restarted my game and my computer, tried uploading it again and saving it...

Halp?

Still not dere. It's just... I need caves and that one is more realistic looking.

[Forests]

I've had that before:

Check the object is in your actual my_objects folder.
If it is, then I have no idea what else to do
It only happened to me when I had things in my_trees (meshes etc)
and just placed the material and mesh in my_objects

[Ingredient]

You shouldn't add anything to the current default groups like MyRocks and MyPlants. You should make your own custom group for them because they can cause errors like the one you have

[-Rapid-]

Okay I'll try both of what you said, thank you for your help.