I think it possibly has to do with the new recent update on 11/19.

I spawned a few Snow Golems in creative mode and they went after a creeper and as soon as the creeper explodes it crashes the game.. Each time I open the world again it goes back around 3 seconds before the explosion and just keeps exploding and crashing over and over.. Vicious cycle.. I tried changing from creative to survival but same result again..

Thanks for all the help and hope it can get resolved..
C