If you want to upgrade, you need to read the information in
this topic. You can't just slap a new mod version on and load an old save.
In this case, upgrading from 0.96 to 0.97 required you to remove all government patrol missions from your save. You have two of them which are ongoing, and you have them listed in every other regions.
So you did not upgrade your save to be compatible with the new mod version, that's why the missions are causing a crash at the end of the month. Nothing wrong with the mod
To make your save compatible, you need to:
- remove both instances of "
STR_MISSION_GOVT_PATROL" along with their parameters, in the "
alienMissions" section
- remove the "
STR_MISSION_GOVT_PATROL:" (followed by a number), in the
possibleMissions section
Upgrading the mod while continuing a campaign requires some work (always outlined in the topic I linked above). Otherwise, it is much safer to stick to one version for one campaign.