CTD when saving immediately after an event

[ConcordantNexus]

happens to me about 15-20% of the time

1.03
autosave = once per year
Playing as Poland

it furthermore 'pollutes' (ie trying to open it is auto CTD) that particular save until a 'good' save overwrites it

 

[ConcordantNexus]

Just had a Run time error while it was doing the January 1, 1081 autosave

"R6025" blah blah blah - argh!!!!

 

[ConcordantNexus]

Happened again (again during a war with Galicia)

I try to save in the middle of the war (a count had just accept mine annexing him) and:

R6025 pure virtual function call