So I have some dead npc sims I need to resurrect. They were made by me but not placed in any world or lot. I tried everything, the mcc mailbox summon to lot but I just get a script error. I bought the wishing well but there's no life wish interaction. I don't know any other way to bring them back, they don't have graves any thoughts? Also better yet any way to stop sims from dying not on my watch? Thanks

As far as I know, MCCC cannot summon ghost sims. As for the ghost sims themselves, test it by placing them on lot first, then have one living sim with them, play the household, and have one living sim resurrect the ghost.