First of all, I went to mc.smash.com, and then I was playing a couple of times. My first game, I played with a fire charge, and then my game crashed, but I didn't know why. After playing alot of times, I realized, when someone or I shoot the fire charge, my game crashes. This doesn't seem to happen to other people. I installed optifine, and uninstalled it, and did all I tried to fix it, but it doesn't work. Also, when my game crashes, My game doesn't give me the Minecraft has stopped working. It just gives me a java error.