Earlier this year, an Illinois court freed Carl Chatman from prison on rape charges after prosecutors said they now doubted the credibility of the woman who accused him of rape and were no longer certain that a crime even occurred. He had served 10 years of a 30-year sentence. But his legal troubles weren't over. As he was getting ready for church recently, Berwyn police arrested him for being an unregistered sex offender after they discovered his name on the state's sex offender registry. They released him after prosecutors said his name should not have been on that list. The Illinois State Police, which maintains the database, said they would remove his name but could not explain why it was on there.