The collapse of the attempt to remake the FBI's filing system stemmed from failures of almost every kind, including poor conception and muddled execution of the steps needed to make the system work, according to outside reviews and interviews with people involved in the project. But the problems were not the FBI's alone. Because of an open-ended contract with few safeguards, SAIC reaped more than $100 million as the project became bigger and more complicated, even though its software never worked properly.