Kattiq, I don't know how far along you are in your dynasty, but a lot of people - myself included - have had problems in the later generations as the game file got bigger and bigger. In my Clan Douglas Dynasty, I got rid of a bunch of unnecessary items like the big fish tank, etc - that seemed to help a bit. At the end, I didn't allow myself to add anything new to the lot. Anytime a new museum sculpture or painting needed to be added, I found something I could delete. I can't say for sure if all this helped, but when I took these steps the game stopped crashing, so it might be worth trying. And be sure to save often. Maybe someone else will have other ideas. Good luck.