java.lang.NullPointerException
    at net.minecraft.entity.player.EntityPlayer.getTeam(EntityPlayer.java:2284)
    at net.minecraft.entity.player.EntityPlayer.getDisplayName(EntityPlayer.java:2291)
    at net.minecraft.util.CombatEntry.getDamageSrcDisplayName(SourceFile:57)
    at net.minecraft.util.CombatTracker.getDeathMessage(SourceFile:77)
    at org.spongepowered.common.event.SpongeCommonEventFactory.callDestructEntityEventDeath(SpongeCommonEventFactory.java:963)
    at net.minecraft.entity.EntityLivingBase.onDeath(EntityLivingBase.java:3327)
    at net.minecraft.entity.EntityLivingBase.attackEntityFrom(EntityLivingBase.java:3647)
    at net.minecraft.entity.monster.EntityMob.attackEntityFrom(EntityMob.java:70)
    at net.minecraft.world.Explosion.doExplosionA(Explosion.java:748)
    at net.minecraft.world.WorldServer.triggerInternalExplosion(WorldServer.java:2873)
    at net.minecraft.world.WorldServer.newExplosion(WorldServer.java:3456)
    at net.minecraft.world.World.createExplosion(World.java:2300)
    at atomicstryker.battletowers.common.AS_TowerDestroyer.update(AS_TowerDestroyer.java:87)
    at atomicstryker.battletowers.common.ServerTickHandler.onTick(ServerTickHandler.java:33)
    at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_515_ServerTickHandler_onTick_WorldTickEvent.invoke(.dynamic)
    at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90)
    at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:756)
    at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:706)
    at net.minecraftforge.fml.common.FMLCommonHandler.onPreWorldTick(FMLCommonHandler.java:287)
    at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:752)
    at net.minecraft.server.dedicated.DedicatedServer.updateTimeLightAndEntities(DedicatedServer.java:397)
    at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:668)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526)
    at java.lang.Thread.run(Thread.java:748)