The Indiana Court of Appeals has denied a new trial for a man who, along with a state trooper, was convicted in the slayings of the trooper's wife and two children. Attorneys for Charles Boney said a Floyd Circuit Court judge made critical errors during his 2006 trial, including giving a jury an improper instruction about how it should consider information that Boney sold a gun to the trooper before the killings.But the appeals court said the errors either didn't happen or didn't affect the trial. Jurors in January 2006 convicted Boney on three counts of murder, and he was sentenced to 225 years in prison. A separate jury two months later convicted the former trooper, David Camm, of killing Camm's wife and two children in the garage of their home in the southern Indiana town of Georgetown. Camm's attorneys have argued that Boney, not Camm, committed the murders, and they have asked the Indiana Supreme Court to overturn Camm's conviction.