playthroughs consistently start crashing on save

first off, amazing mod. can't stop playing it. however, every playthrough i've tried always ends up with the same problem (seems to be common, lots of people posting about it) where the game crashes every time you try to save on or after January 1st of each year. there is a workaround where you edit the save file date from December 31st to January 2nd but it's very tedious to have to resign from the game, edit the file, and reload.

i'm using CK2 2.7.1 and AGOT 1.5. i'm not using any submods and i have all DLC except Jade Dragon (obviously), Monks and Mystics, Conclave, and most of the unit/music packs.

i'll post both saves (which interestingly enough run into the same problem at around the same time, ~8070). hopefully this is a fixable problem i've read elsewhere that this seems to happen because of an annual (maintenance?) event not working, but im not educated on the subject so i'll leave it to u guys.

hopefully these links work, the saves are too big to attach.
www.dropbox.com/s/7atix2rlopwmhb9/savecrash1.zip?dl=0
www.dropbox.com/s/q31ok99l6x60ehn/savecrash2.zip?dl=0

thanks!