The article states that calculation of bend radii (of wiring/cabling) was the problem. If that was the case, surely one of the two versions of their design soft

The article states that calculation of bend radii (of wiring/cabling) was the problem. If that was the case, surely one of the two versions of their design software was calculating incorrectly? If so, one would think that the whole team being on the same version wouldn't have helped (if they were on a version that calculated lengths incorrectly). But perhaps there's more subtlety to the calculation discrepancy than is evident in the article.