Great work! I played the new 0.0.10 version, and I've seen that it doesn't crash ... for much longer.
Eventually, it did crash (on my 2nd game -- I lost the first one quickly). I was quite late in the game: army of maybe six, mission to get 2000 reachable in maybe a few days, and lots of income producing installations. The automatically saved the state, maybe just before crashing. If I try to continue that saved game, it just crashes immediately after loading. All crashes give the same error as before. I've sent you the savagame and the crash folder by email.
Great game BTW! Fun to play, so many thanks. In my first game, I got defeated, which is a first at Pact. Nice! I was a bit careless maybe. The second game, it was the one that crashed.
Maybe what made it crash is the following. Because I think I understood that planting an installment (a bank, windmills or mine) "overwrites" the previous original location, which turns into a bank etc, and because I didn't want to lose original locations and their useful options, I started planting my installments one over the other instead. This way, I only lost the access to the options of my older installment, which (apart from upgrading of windmills twice) I was not interested in using. What was important for me as a player, is that I kept the income of "overwritten" installments, and that seemed to be the case. So not only I planted banks over banks repeatedly, but also different installment over each other, like windmills over banks. Maybe, when an exhausted bank recovered or something like it, and wasn't actually a bank any longer, this it made it crash. Just a wild guess.
BTW, from the point of view of design of the rules, I wonder (1) if players should really be allowed to plant one installment over another, unrealistically stacking them up in the same place, and (2) if an installment should really be replacing the original options of a place, rather than just adding new options but keeping the old ones (It's not like the herborist of a city disappears just because you opened a bank subsidiary next to it).