[05:57:32] [Server thread/ERROR]: Encountered an unexpected exception
net.minecraft.util.ReportedException: Ticking entity
    at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:642) ~[MinecraftServer.class:?]
    at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:334) ~[lt.class:?]
    at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547) ~[MinecraftServer.class:?]
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427) [MinecraftServer.class:?]
    at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685) [li.class:?]
Caused by: java.lang.NullPointerException
    at com.flashoverride.heartdrop.HeartDropEventHandler.onEvent(HeartDropEventHandler.java:33) ~[HeartDropEventHandler.class:?]
    at cpw.mods.fml.common.eventhandler.ASMEventHandler_364_HeartDropEventHandler_onEvent_LivingDeathEvent.invoke(.dynamic) ~[?:?]
    at cpw.mods.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:54) ~[ASMEventHandler.class:?]
    at cpw.mods.fml.common.eventhandler.EventBus.post(EventBus.java:138) ~[EventBus.class:?]
    at net.minecraftforge.common.ForgeHooks.onLivingDeath(ForgeHooks.java:303) ~[ForgeHooks.class:?]
    at net.minecraft.entity.player.EntityPlayerMP.func_70645_a(EntityPlayerMP.java:405) ~[mw.class:?]
    at net.minecraft.entity.EntityLivingBase.func_70097_a(EntityLivingBase.java:855) ~[sv.class:?]
    at net.minecraft.entity.player.EntityPlayer.func_70097_a(EntityPlayer.java:1034) ~[yz.class:?]
    at net.minecraft.entity.player.EntityPlayerMP.func_70097_a(EntityPlayerMP.java:491) ~[mw.class:?]
    at net.minecraft.entity.monster.EntityMob.func_70652_k(SourceFile:101) ~[yg.class:?]
    at toast.specialMobs.entity.silverfish.Entity_SpecialSilverfish.func_70652_k(Entity_SpecialSilverfish.java:91) ~[Entity_SpecialSilverfish.class:?]
    at net.minecraft.entity.monster.EntitySilverfish.func_70785_a(SourceFile:74) ~[yk.class:?]
    at toast.specialMobs.entity.silverfish.EntityFlyingSilverfish.func_70785_a(EntityFlyingSilverfish.java:42) ~[EntityFlyingSilverfish.class:?]
    at net.minecraft.entity.EntityCreature.func_70626_be(SourceFile:63) ~[td.class:?]
    at net.minecraft.entity.monster.EntitySilverfish.func_70626_be(SourceFile:98) ~[yk.class:?]
    at net.minecraft.entity.EntityLivingBase.func_70636_d(EntityLivingBase.java:1780) ~[sv.class:?]
    at net.minecraft.entity.EntityLiving.func_70636_d(EntityLiving.java:367) ~[sw.class:?]
    at net.minecraft.entity.monster.EntityMob.func_70636_d(SourceFile:25) ~[yg.class:?]
    at toast.specialMobs.entity.silverfish.Entity_SpecialSilverfish.func_70636_d(Entity_SpecialSilverfish.java:70) ~[Entity_SpecialSilverfish.class:?]
    at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:1611) ~[sv.class:?]
    at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:206) ~[sw.class:?]
    at net.minecraft.entity.monster.EntityMob.func_70071_h_(SourceFile:30) ~[yg.class:?]
    at net.minecraft.entity.monster.EntitySilverfish.func_70071_h_(SourceFile:93) ~[yk.class:?]
    at net.minecraft.world.World.func_72866_a(World.java:2070) ~[ahb.class:?]
    at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:648) ~[mt.class:?]
    at net.minecraft.world.World.func_72870_g(World.java:2034) ~[ahb.class:?]
    at net.minecraft.world.World.func_72939_s(World.java:1887) ~[ahb.class:?]
    at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:489) ~[mt.class:?]
    at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:636) ~[MinecraftServer.class:?]
    ... 4 more