I think I have a corrupt sim

Thanks Gibbs, it was worth a try, but the problems with this household are getting worse. I switched back to it from playing another household, but now half the functionality isn't working. For a starters, the pictures of the sims on the left aren't there. Nor is the picture of the active sim that normally is above the sims lifetime wish. I can't change between household members. None of the sim panels tabs are working either. In the inventory panel the phone isn't visible so I can't move them. In the needs panel, none of the needs are there. It's just blank. None of the green progress icons are visible. So I went into Edit Town, and selected a random household to merge them into, to get them out of that house. However, they took their problems with them, because none of the household pictures are visible in the new place, not even the sim who was originally living there. Also, build and buy mode aren't working either. But it's only with this one household. Everyone else seems fine that I've tried so far.