When I open the game with the 0.12.6 version It crashes, but the 0.12.3 works fine.
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The same thing happens to me, when 0.12.6 came out I downloaded it, when I tried to enter the game nothing weird happened, not a black screen or anything else, everything normal, then I tried to load a saved game and it did not work, after a few seconds the game closed by itself and no text appeared, I tried to uninstall and install the game but it didn't work, at least I have my save files that I did in old versions