I am playing Kunagi's route. Everything was fine until 1 scene in Kyuushuu near the end of the game and this happened

Do you know what the problem is?

Hi there,
I've got the exact same error as kel. I m stuck on turn 74 after the giant of the holy flame starts invading areas.
I tried it with Windows XP and Windows 8.1 on different pc
Also tried different installations of the game with different translation patches. I even tried it with the untranslated original game.
I also tried the new unofficial patch for Ver. 1.31. Nothing seems to work.
I guess the problem is a faulty save game, but I dont know the cause for that.
There is also almost no information on the internet about that error, which complicates the whole thing.

Here is my savegame if someone wants to try it out

but i guess i have to reload an earlier savegame and beat the holy flame before they activate the giant. Too bad that way I'm not able to get Marisha.
Fun times -.-