Thanks TeutenburgerW for helping us, your modding skills is needed
And when you already mod, could you just look on the RSK event. What could cause it to crash the game some days after firing it. I haven't tried to via cheat fire it on the first day, please try that and see what happens. Of course when you have hopefully done the bug fixes.
The problem with your event is this:
Code:
date = { day = 31 month = june year = 1091 }
In HOI2, there are only 30 days.
Also, is it intentional that the event should only fire once (last june) if Croatia and Serbia are at war? I guess not, so therefore I think you should add an offset (so it checks multiple times if the triggers are fulfilled and then popups the event):
Code:
date = { day = 30 month = june year = 1091 }
offset = 7
deathdate = { day = 30 month = july year = 1095 }
This way, it will fire once Croatia and Serbia are at war.
And yes, it works to press F12 and type "event 1003000" and it pops up.