This is a hotfix for those with following problems: freezes, town miscalculations and disappeared main party. PLEASE READ FULL DESCRIPTION FOR INSTRUCTIONS.
I tested 3 of the uploaded savegames and they work! Download the fix below to have your savegames work again (SAVE GAME COMPATIBLE):
1) Make a backup of all .txt files in ...\Warband\Modules\Nova Aetas\.
2) Make a back-up of your savegames.
3) Open savegame and check if there's nothing strange (weird troop names, dialogs, errors, freezes whatever strange events, especially check dialogues and prestige points).
This is a hotfix for those with the following problems:
1) Party disappeared, but still moving around (wait 24 hours before it gets fixed)
2) Town miscalculations.
Have fun and let me know your results!