It seems that every time a enraged creeper explodes, my minecraft crashes. May be a optifine issue, if anyone else is having this problem post it below so aikar can take a look! thats if it isn't optifine do its typical "let's kill minecraft".
java crashes really seem to be due to Java 6 a lot. Check your Add/Remove programs and un-install Java 6 and ensure only Java7 or 8 is installed, or else 6 could be your default.