well i've also heard of a glitch from outpost 1 mabey its here too, where if one builds too many residences some kind of redunancy error happans I got it from wiki:
"Sometimes, players will find the colonists on the planet dying en masse unexpectedly , thus causing the game to end when everyone has died. The colonists' death rate during this occurrence is one of exponential growth, following the equation 2^n, where n is the number of turns passed since the widespread death bug began.
The algorithm to calculate recyclable resources was also exploitable. If one built enough residential units, the resulting recyclables produced by the colony would be more than the resources going into the colony."
do you think that would cause it?