No. In this case I set the correct bit size and saved many times. The problem is that save worked but did not turn a corrupt file in to one that the
new version of ekos could understand. Maybe because the format of the original was just too out of date. I've had a similar problem years ago
but I had forgotten. It is only later when 3.6.9 started magically working and I looked at the difference between the new file and old one i realised
that new one was very different.