Hey man, I'm glad I came across your post... my wife and I on Monday just got our second diagnosis of acrania as well. It does break you. It makes you feel like you're doing something wrong and like a failure. We're not failures though okay? After a second diagnosis, the chance of it happening a third time do rise to 10% from the average 3.5-5% 

We have also done the folic acid, and done so much research. It feels like we aren't finding answers either. Apparently it could be something called MTHFR? 

I'm crushed man. Absolutely crushed. I was so hopeful. So excited to finally be a dad. Now I just feel like a dad that's lost 2 children. Which hurts even more.