Rihanna filed lawsuit claiming that her mansion is unfit to live in. She claims that leaks left the home uninhabitable and that due dilligence was not taken when it was inspected. Below is the link to read the full article in Realtor Magazine. It can be extremely difficult to spot a problem that is inside the walls of a home. The home inspector does the best job they can. As a realtor even when you are doing your own walk thru its hard to spot potential issues that may pop up down the road. Just do your best.
This link will direct you to the legal document filed in court by Rihanna.