New undefined error

Another day another error. Lack of details on this one too, as a bonus. Can't seem to pinpoint it either in longSlaveDescription, but if I had to guess, it has something to do with trying to find a relative that hasn't been generated yet. Further isolating it limits it to FResult().

Further information has it with extended family mode OFF.

The FResult not rounding is just icing on the cake, but likely a side effect of it.