I did read (and respond to) your "Disappointed" post, but the deaths and disappearances you described do not appear to be related to bugs. In the early stages of the game there are circumstances that can cause your villagers not to 'survive the night,' especially if you are running the game on fast speed. You can usually avoid killing off a lot of villagers by controlling your population growth in the early stages of the game, making sure there is adequate food from more than one source, and researching higher levels of medical technology.
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Barbara
Unicorn
Last Day of Work