Sentry Error

11:57 PM [WARNING] [Sentry] Task #34633 for Sentry v1.8.2 generated an exception
java.lang.NoSuchMethodError: net.minecraft.entity.EntityLivingBase.e(Z)V
	at net.aufdemrand.sentry.SentryInstance.Draw(SentryInstance.java:702)
	at net.aufdemrand.sentry.SentryInstance.setTarget(SentryInstance.java:1755)
	at net.aufdemrand.sentry.SentryInstance$SentryLogic.run(SentryInstance.java:1503)
	at org.bukkit.craftbukkit.v1_7_R4.scheduler.CraftTask.run(CraftTask.java:67)
	at org.bukkit.craftbukkit.v1_7_R4.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:345)
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:863)
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:422)
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:803)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:663)
	at java.lang.Thread.run(Unknown Source)