When entering Nether, there is a skeleton that wandered in, and is blocking me in the portal and causing the game to crash.

I was going into the nether through my old portal, and when I got there all I saw were pigmen, and a skeleton's chest and bow, and I tried to move, and the game crashed. I tried reloading it, because I didn't save, but I kept getting spawned in the nether, in the portal, and the game crashes.