well, i understand when i read other post that fix, but i just read the patch note for the 1.1, and see :
Save & Load
- Optimised the save system to reduce the total size of the save file.
- Save file sizes now increase linearly. (They used to double over time.)
- Minor improvement to save time.
- Fixed an issue for old save files that have clans with no leaders.
so i just have to wait the release ,
(mean this post can go : "solved" )