User blog comment:Nikel23/The Sims 3: Island Paradise release/@comment-3348732-20130701120911

With that bug, I tried to move a family to Isla Paradiso, they halted and the father took a shower. So I tried to move them again and the father and mother and baby turned invisible. After resetting them (Which I probably shouldn't have done) I tried to move them again but the game said I couldn't at the time. Then it turned out my son was at school, which might explain why they were waiting at first... either way, I deleted the family. Started a new family in Isla Paradiso but I couldn't save until my previous family was moved in.

I had to uninstall and reinstall the expansion. But luckily my new family wasn't deleted yay!