Simeng Crashes 08

My Dynasty crashes while simulating with the simeng fix i dl-ed but it doesnt happen all the time it's been working for days but now it's acting up again this insn't the first time. What can I do?

Put back the original simengine.

but i dont wann the custom one simulates more realistically (way more realistic)

Not much choice if it's causing problems. Just to be sure though, what error message do you get when the game crashes?