My whole world just disappeared while I was building lightboxes, I can't use my pip-boy, I can't go in thirdperson(Or see my model). I tried coc redrocketext. I got out of my power armor, and I saw no model, I ordered a vertibird and saw nothing.

EDIT: Reloaded my game, now everything works again So, just the models were "unloaded"

Edit 2: To people who have the same problem. Save the Game. Load the save and it should work