[Suzuran]

The real problem with it turned out to be that while the software is complete it expected data to be provided from both the crew and the ground at different points in the mission. Without this external data (and more importantly, the procedures and processes that generated it) the software is really just a very obtuse desk clock.

Actually making use of the software required years of extra work in document archaeology and reverse engineering the processes and constraints that generated the data used during the flights.