I can't remember what I did that may have introduced this bug. (too many operations)

Does the error message states that is linked to the electric system ? (I remember one or two things I did I could try on smaller saves to see if it creates the same behaviour)

Also, I don't know why, but the error ...

Loaded the game from steam, no update were made from previous playtime (and time of last save).

Clicked on Continue "name of save"
Load correctly the game but fails at the end of configuration of entity "name of save"

Then it spins lock with : mutex lock failed : Invalid argument

I have attached ...