Not exactly sure how I got this to happen, but this savegame I managed to get it to crash not long after this point. You will also need this to get it to load. (I can’t attach them here)
I had Just added the Manufacture slots, but i think it may have something to do with vehicles produced. FYI, I cheated to get the money that High as well, this is a Play around map trying to figure out the balance.
Anyway, Hope you can get it to Duplicate as well.