endreset error

2012-07-25 16:17:13 [WARNING] Task of 'EndReset' generated an exception
java.lang.NoSuchMethodError: org.bukkit.World.spawnEntity(Lorg/bukkit/Location;Lorg/bukkit/entity/EntityType;)Lorg/bukkit/entity/Entity;
	at de.V10lator.EndReset.EndReset.regen(EndReset.java:338)
	at de.V10lator.EndReset.EndReset.access$3(EndReset.java:322)
	at de.V10lator.EndReset.EndReset$RegenThread.run(EndReset.java:384)
	at org.bukkit.craftbukkit.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:126)
	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:533)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:459)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)