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Truncated castles are a bug that doesn't get fixed when editing a DOS map for Windows. This, of course, looks very bad, as I told Maximix. But, we decided to play on this edited map anyway, even though I suggested another one.
Essentially, the only edit was to remove the exit to the sea. This was done to prevent players from immediately starting to dig boats for their companies on the very first day, which would completely ruin the intrigue of the game.
However, adding artifacts seems to have caused a serious bug, which, as you correctly noted, leads to the game crashing!
Conclusion: we rushed a bit with the start of the tournament. I apologize in advance to everyone who has already started playing. The save will be replaced soon! The selection of the map and save was handled by the host from HP. I will go and write about this incident on the portal.
I hope for your understanding.
Sincerely, VDV_forever