I had seen this happen in earlier versions (before graph) when my power went to 999,999. It would sit there a few turns, then change to zero. I thought with the change in number system (much lower values) this was fixed. Although it may of course not be the same thing.
In this game I did a lot of saving and loading because I was looking for the dreaded battle viewer black screen event (which only happened twice in about 238 turns). Had no problem until about 10 turns before the picture shown, then every loaded save showed this problem, with the "break" at the same point.
Fortunately the documentation was fairly easy and hopefully they can figure it out.
