Game Crashed during Sandbox, then crashes when loading autosave

As the title said: I experimented in sandbox-mode when suddenly the game just closes.
Restarted it and wanna load autosave leads to another crash.

faced that now several times.
output_log.txt (after trying to load game) and *.sav are attached.

showing: [WARNING] Insufficient keys to cover root plan menu Max of 12 keys supported but TUNING.BUILDINGS.PLANORDER has 13

thanks for your effort

Sandbox Cycle 76.sav